2020 United States Senate elections

2020 United States Senate elections

November 3, 2020 January 5, 2021 (Georgia runoffs)
35 of the 100 seats in the United States Senate 51[a] seats needed for a majority
Majority party Minority party   Leader Chuck Schumer Mitch McConnell Party Democratic Republican Leader since January 3, 2017 January 3, 2007 Leader's seat New York Kentucky Seats before 45 53 Seats after 48 + VP [b][c] 50[c] Seat change 3 3 Popular vote 38,011,916 [d] 39,834,647[d] Percentage 47.0% 49.3% Seats up 12 23 Races won 15 20   Third party   Party Independent Seats before 2[e] Seats after 2 Seat change Popular vote 255,768[f] Percentage 0.3% Seats up 0 Races won 0
Results of the elections:      Democratic gain      Republican gain      Democratic hold      Republican hold      No election Rectangular inset (Georgia): both seats up for election
Majority Leader before election Mitch McConnell Republican Elected Majority Leader Chuck Schumer[g] Democratic

The 2020 United States Senate elections were held on November 3, 2020,^[1] with the 33 class 2 seats of the Senate contested in regular elections.^[2] Of these, 21 were held by Republicans, and 12 by Democrats. The winners were elected to 6-year terms from January 3, 2021, to January 3, 2027.^[3] Two special elections for seats held by Republicans were also held in conjunction with the general elections: one in Arizona, to fill the vacancy created by John McCain's death in 2018; and one in Georgia, following Johnny Isakson's resignation in 2019.^[4][5][6][7] These elections ran concurrently with the 2020 United States presidential election in which incumbent president Donald Trump lost to Democratic nominee Joe Biden.

In the 2014 United States Senate elections, the last regularly scheduled elections for Class 2 Senate seats, the Republicans won nine seats from the Democrats and gained a majority,^[8] which they continued to hold after the 2016 and 2018 elections.^[9][10] Before the elections, Republicans held 53 seats, Democrats held 45 seats, and independents caucusing with the Democrats held two seats, neither of which were up for re-election.^[11] Including the special elections in Arizona and Georgia, Republicans defended 23 seats, and the Democrats defended 12.^[12]

In this election, the Democratic Party made a net gain of three Senate seats and the vice presidency, giving them a majority for the first time since 2014, albeit by a narrow 50–50 margin.^[a][13] Democrats unseated four Republicans in Arizona, Colorado, and both elections in Georgia – while Republicans flipped a seat in Alabama; however, Democrats under-performed expectations overall; despite record-breaking turnout and fund-raising efforts, they failed to flip several seats that were considered competitive, and lost many races by much larger margins than expected.^[6][14] Except in Maine, the winning party in every Senate election was the winning party in the state's presidential election.^[15]

Due to election laws in Georgia that require candidates to win at least 50% of the vote in the general election, the state's regularly scheduled and special Senate elections were decided in run-off elections on January 5, 2021.^[16] After the November general election, Republicans held 50 seats, while Democrats held 48 and the vice presidency, so sweeping both races was crucial for Democrats to attain a majority. They succeeded in doing so,^[7] and the partisan balance in the Senate became tied for the third time in history, after the results in the 1880 elections and the 2000 elections.^[17][18] Vice President Kamala Harris's tie-breaking vote gave Democrats control of the chamber by the smallest margin possible after the new administration took office.^[19]

This marked the first time since 1980 that either chamber of Congress flipped partisan control in a presidential election year, and the first time Democrats did so since 1948.^[20]

Election summary

Seats

Parties						Total
			Democratic	Independent	Republican
Last elections (2018)			45	2	53	100
Before these elections			45	2	53	100
Not up			33	2	30	65
	Class 1 (2018→2024)		21	2	10	33
	Class 3 (2016→2022)		12	—	20	32
Up			12	—	23	35
	Class 2 (2014→2020)		12	—	21	33
	Special: Class 3		—	—	2	2
	Regular elections
	Incumbent retired		1	—	3	4
		Held by same party	1	—	3	4
		Replaced by other party	—	—	—	0
		Result	1	—	3	4
	Incumbent ran		11	—	18	29
		Won re-election	10	—	16	26
		Lost re-election	1 Democrat replaced by 1 Republican 2 Republicans replaced by 2 Democrats			3
Special elections
	Appointee ran		—	—	2	2
		Appointee elected	—	—	0	0
		Result	2 Republicans replaced by 2 Democrats			2
Result			48[c]	2[e]	50[c]	100

Votes

National results^[21]

Parties		Votes	%	Seats
				Total before	Up	Won	Total after	+/-
	Republican	39,834,647	49.29	53	23	20	50	3
	Democratic	38,011,916	47.03	45	12	15	48	3
	Libertarian	1,454,128	1.80	0	0	0	0
	Green	258,348	0.32	0	0	0	0
	Constitution	110,851	0.14	0	0	0	0
	Independent	255,768	0.32	2	0	0	2
	Other parties	794,479	0.98	0	0	0	0
	Write-in	100,946	0.12	0	0	0	0
Total		80,821,083	100.00	100	35	35	100

Change in composition

Republicans defended 23 seats, while Democrats defended 12.^[12] Each block represents one of the 100 Senate seats. "D#" is a Democratic senator, "I#" is an independent senator, and "R#" is a Republican senator. They are arranged so that the parties are separated, and a majority is clear by crossing the middle.

Before the elections

Each block indicates an incumbent senator's actions going into the election. Both Independents caucus with the Democrats.

D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
D20	D19	D18	D17	D16	D15	D14	D13	D12	D11
D21	D22	D23	D24	D25	D26	D27	D28	D29	D30
D40 N.H. Ran	D39 Minn. Ran	D38 Mich. Ran	D37 Mass. Ran	D36 Ill. Ran	D35 Del. Ran	D34 Ala. Ran	D33	D32	D31
D41 N.J. Ran	D42 N.M. Retired	D43 Ore. Ran	D44 R.I. Ran	D45 Va. Ran	I1	I2	R53 Wyo. Retired	R52 W.Va. Ran	R51 Texas Ran
Majority →									R50 Tenn. Retired
R41 La. Ran	R42 Maine Ran	R43 Miss. Ran	R44 Mont. Ran	R45 Neb. Ran	R46 N.C. Ran	R47 Okla. Ran	R48 S.C. Ran	R49 S.D. Ran
R40 Ky. Ran	R39 Kan. Retired	R38 Iowa Ran	R37 Idaho Ran	R36 Ga. (sp) Ran	R35 Ga. (reg) Ran	R34 Colo. Ran	R33 Ark. Ran	R32 Ariz. (sp) Ran	R31 Alaska Ran
R21	R22	R23	R24	R25	R26	R27	R28	R29	R30
R20	R19	R18	R17	R16	R15	R14	R13	R12	R11
R1	R2	R3	R4	R5	R6	R7	R8	R9	R10

After the elections

After the January 5, 2021 runoff elections in Georgia.

D1	D2	D3	D4	D5	D6	D7	D8	D9	D10
D20	D19	D18	D17	D16	D15	D14	D13	D12	D11
D21	D22	D23	D24	D25	D26	D27	D28	D29	D30
D40 N.J. Re-elected	D39 N.H. Re-elected	D38 Minn. Re-elected	D37 Mich. Re-elected	D36 Mass. Re-elected	D35 Ill. Re-elected	D34 Del. Re-elected	D33	D32	D31
D41 N.M. Hold	D42 Ore. Re-elected	D43 R.I. Re-elected	D44 Va. Re-elected	D45 Ariz. (sp) Gain[h]	D46 Colo. Gain	D47 Ga. (reg). Gain	D48 Ga. (sp). Gain[h]	I1	I2
Majority (with independents and vice president)[c] ↑
R41 Neb. Re-elected	R42 N.C. Re-elected	R43 Okla. Re-elected	R44 S.C. Re-elected	R45 S.D. Re-elected	R46 Tenn. Hold	R47 Texas Re-elected	R48 W.Va. Re-elected	R49 Wyo. Hold	R50 Ala. Gain
R40 Mont. Re-elected	R39 Miss. Re-elected	R38 Maine Re-elected	R37 La. Re-elected	R36 Ky. Re-elected	R35 Kan. Hold	R34 Iowa Re-elected	R33 Idaho Re-elected	R32 Ark. Re-elected	R31 Alaska Re-elected
R21	R22	R23	R24	R25	R26	R27	R28	R29	R30
R20	R19	R18	R17	R16	R15	R14	R13	R12	R11
R1	R2	R3	R4	R5	R6	R7	R8	R9	R10

Key:	D# Democratic R# Republican I# Independent, caucusing with Democrats

Final pre-election predictions

Several sites and individuals published predictions of competitive seats. These predictions looked at factors such as the strength of the incumbent (if the incumbent was running for re-election) and the other candidates, and the state's partisan lean (reflected in part by the state's Cook Partisan Voting Index rating). The predictions assigned ratings to each seat, indicating the predicted advantage that a party had in winning that seat. Most election predictors used:

• "tossup": no advantage
• "tilt" (used by some predictors): advantage that is not quite as strong as "lean"
• "lean": slight advantage
• "likely": significant, but surmountable, advantage
• "safe" or "solid": near-certain chance of victory

Constituency		Incumbent		2020 election ratings
State	PVI[22]	Senator	Last election[i]	Cook Oct 29, 2020[23]	IE Oct 28, 2020[24]	Sabato Nov 2, 2020[25]	Daily Kos Nov 2, 2020[26]	Politico Nov 2, 2020[27]	RCP Oct 23, 2020[28]	DDHQ Nov 3, 2020[29]	538[j][k] Nov 3, 2020[30]	Economist Nov 3, 2020[31]	Result[32]
Alabama	R+14	Doug Jones	50.0% D (2017 special)[l]	Lean R (flip)	Lean R (flip)	Likely R (flip)	Likely R (flip)	Lean R (flip)	Likely R (flip)	Safe R (flip)	Likely R (flip)	Safe R (flip)	Tuberville (60.1%) (flip)
Alaska	R+9	Dan Sullivan	48.0% R	Lean R	Lean R	Lean R	Lean R	Lean R	Lean R	Lean R	Likely R	Lean R	Sullivan (54.3%)
Arizona (special)	R+5	Martha McSally	Appointed (2019)[m]	Lean D (flip)	Tilt D (flip)	Lean D (flip)	Lean D (flip)	Lean D (flip)	Tossup	Likely D (flip)	Likely D (flip)	Lean D (flip)	Kelly (51.2%) (flip)
Arkansas	R+15	Tom Cotton	56.5% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Cotton (66.6%)
Colorado	D+1	Cory Gardner	48.2% R	Lean D (flip)	Lean D (flip)	Likely D (flip)	Likely D (flip)	Lean D (flip)	Lean D (flip)	Likely D (flip)	Likely D (flip)	Likely D (flip)	Hickenlooper (53.5%) (flip)
Delaware	D+6	Chris Coons	55.8% D	Safe D	Safe D	Safe D	Safe D	Solid D	Safe D	Safe D	Solid D	Safe D	Coons (59.4%)
Georgia (regular)	R+5	David Perdue	52.9% R	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Ossoff (50.6%) (flip)[n]
Georgia (special)	R+5	Kelly Loeffler	Appointed (2020)[o]	Tossup	Tossup	Tossup	Tossup	Lean R	Lean R	Tossup	Lean D (flip)	Tossup	Warnock (51.0%) (flip)[n]
Idaho	R+19	Jim Risch	65.3% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Risch (62.6%)
Illinois	D+7	Dick Durbin	53.5% D	Safe D	Safe D	Safe D	Safe D	Solid D	Safe D	Safe D	Solid D	Safe D	Durbin (54.6%)
Iowa	R+3	Joni Ernst	52.1% R	Tossup	Tossup	Lean R	Tossup	Tossup	Tossup	Tossup	Tossup	Tossup	Ernst (51.8%)
Kansas	R+13	Pat Roberts (retiring)	53.1% R	Lean R	Tilt R	Lean R	Lean R	Lean R	Lean R	Lean R	Likely R	Lean R	Marshall (53.5%)
Kentucky	R+15	Mitch McConnell	56.2% R	Likely R	Safe R	Likely R	Safe R	Likely R	Likely R	Safe R	Solid R	Likely R	McConnell (57.8%)
Louisiana	R+11	Bill Cassidy	55.9% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Likely R	Cassidy (59.3%)
Maine	D+3	Susan Collins	68.5% R	Tossup	Tilt D (flip)	Lean D (flip)	Tossup	Tossup	Tossup	Lean D (flip)	Tossup	Lean D (flip)	Collins (51.0%)
Massachusetts	D+12	Ed Markey	61.9% D	Safe D	Safe D	Safe D	Safe D	Solid D	Safe D	Safe D	Solid D	Safe D	Markey (65.8%)
Michigan	D+1	Gary Peters	54.6% D	Lean D	Lean D	Lean D	Lean D	Lean D	Tossup	Likely D	Likely D	Likely D	Peters (49.9%)
Minnesota	D+1	Tina Smith	53.0% D (2018 special)[p]	Safe D	Safe D	Likely D	Likely D	Likely D	Tossup	Likely D	Solid D	Likely D	Smith (48.8%)
Mississippi	R+9	Cindy Hyde-Smith	53.6% R (2018 special)[q]	Likely R	Safe R	Likely R	Safe R	Likely R	Lean R	Likely R	Likely R	Likely R	Hyde-Smith (55.3%)
Montana	R+11	Steve Daines	57.9% R	Tossup	Tossup	Lean R	Lean R	Tossup	Tossup	Lean R	Lean R	Lean R	Daines (55.0%)
Nebraska	R+14	Ben Sasse	64.5% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Sasse (64.7%)
New Hampshire	D+1	Jeanne Shaheen	51.5% D	Safe D	Safe D	Likely D	Safe D	Likely D	Lean D	Safe D	Solid D	Safe D	Shaheen (56.7%)
New Jersey	D+7	Cory Booker	55.8% D	Safe D	Safe D	Safe D	Safe D	Solid D	Likely D	Safe D	Solid D	Safe D	Booker (56.9%)
New Mexico	D+3	Tom Udall (retiring)	55.6% D	Safe D	Safe D	Likely D	Safe D	Likely D	Lean D	Safe D	Likely D	Likely D	Luján (51.7%)
North Carolina	R+3	Thom Tillis	48.8% R	Tossup	Tilt D (flip)	Lean D (flip)	Tossup	Tossup	Tossup	Lean D (flip)	Lean D (flip)	Lean D (flip)	Tillis (48.7%)
Oklahoma	R+20	Jim Inhofe	68.0% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Inhofe (62.9%)
Oregon	D+5	Jeff Merkley	55.7% D	Safe D	Safe D	Safe D	Safe D	Solid D	Safe D	Safe D	Solid D	Safe D	Merkley (57.0%)
Rhode Island	D+10	Jack Reed	70.6% D	Safe D	Safe D	Safe D	Safe D	Solid D	Safe D	Safe D	Solid D	Safe D	Reed (66.5%)
South Carolina	R+8	Lindsey Graham	55.3% R	Tossup	Tilt R	Lean R	Lean R	Lean R	Tossup	Lean R	Likely R	Lean R	Graham (54.5%)
South Dakota	R+14	Mike Rounds	50.4% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Rounds (65.7%)
Tennessee	R+14	Lamar Alexander (retiring)	61.9% R	Safe R	Safe R	Safe R	Safe R	Solid R	Likely R	Safe R	Solid R	Safe R	Hagerty (62.1%)
Texas	R+8	John Cornyn	61.6% R	Lean R	Lean R	Lean R	Lean R	Lean R	Lean R	Likely R	Likely R	Lean R	Cornyn (53.6%)
Virginia	D+1	Mark Warner	49.1% D	Safe D	Safe D	Safe D	Safe D	Solid D	Likely D	Safe D	Solid D	Safe D	Warner (56.0%)
West Virginia	R+19	Shelley Moore Capito	62.1% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Capito (70.3%)
Wyoming	R+25	Mike Enzi (retiring)	72.2% R	Safe R	Safe R	Safe R	Safe R	Solid R	Safe R	Safe R	Solid R	Safe R	Lummis (73.1%)
Overall[r]				D – 48 R – 45 7 tossups	D – 50[s] R – 47 3 tossups	D – 50[s] R – 48 2 tossups	D – 48 R – 47 5 tossups	D – 48 R – 47 5 tossups	D – 45 R – 46 9 tossups	D – 50[s] R – 47 3 tossups	D – 50[s] R – 47 3 tossups	D – 50[s] R – 47 3 tossups	Results: D – 50[c] R – 50

Election dates

State	Filing deadline for major party candidates[33][34]	Filing deadline for write-in candidates in major party primaries[t]	Primary election[33]	Primary run-off (if necessary)[33]	Filing deadline for minor party and unaffiliated candidates[34]	Filing deadline for minor party and unaffiliated write-in candidates[u]	General election	Poll closing (EST)[35]
Alabama	November 8, 2019	Ineligible[36]	March 3, 2020	July 14, 2020	March 3, 2020	November 3, 2020[36]	November 3, 2020	8:00pm
Alaska	June 1, 2020	Ineligible[37]	August 18, 2020	N/A	August 18, 2020	October 29, 2020[38]	November 3, 2020	1:00am[v]
Arizona (special)	April 6, 2020	June 25, 2020[39]	August 4, 2020	N/A	April 6, 2020	September 24, 2020[39]	November 3, 2020	9:00pm
Arkansas	November 11, 2019	Ineligible[40]	March 3, 2020	Not necessary	May 1, 2020	August 5, 2020[40]	November 3, 2020	8:30pm
Colorado	March 17, 2020	April 24, 2020[41]	June 30, 2020	N/A	July 9, 2020	July 16, 2020[41]	November 3, 2020	9:00pm
Delaware	July 14, 2020	Ineligible[42]	September 15, 2020	N/A	September 1, 2020	September 20, 2020[43]	November 3, 2020	8:00pm
Georgia (regular)	March 6, 2020	Ineligible[44]	June 9, 2020	Not necessary	August 14, 2020	September 7, 2020[45]	November 3, 2020[w]	7:00pm
Georgia (special)	March 6, 2020	Ineligible[44]	November 3, 2020	N/A	August 14, 2020	September 7, 2020[45]	January 5, 2021[x]	9:00pm
Idaho	March 13, 2020	May 5, 2020[46]	June 2, 2020	N/A	March 13, 2020	October 6, 2020[46]	November 3, 2020	10:00pm
Illinois	December 2, 2019	January 2, 2020[47]	March 17, 2020	N/A	July 20, 2020	September 3, 2020[47]	November 3, 2020	8:00pm
Iowa	March 13, 2020	June 2, 2020[48]	June 2, 2020	Not necessary	March 13, 2020	November 3, 2020[48]	November 3, 2020	10:00pm
Kansas	June 1, 2020	Not necessary[y][49]	August 4, 2020	N/A	August 3, 2020	November 3, 2020[50]	November 3, 2020	9:00pm
Kentucky	January 10, 2020	Ineligible[51]	June 23, 2020	N/A	June 2, 2020	October 23, 2020[52]	November 3, 2020	7:00pm
Louisiana	July 24, 2020	Ineligible[53]	November 3, 2020	N/A	July 24, 2020	Ineligible[54]	Not necessary	9:00pm
Maine	March 16, 2020	April 10, 2020[55]	July 14, 2020	N/A	June 1, 2020	September 4, 2020[55]	November 3, 2020	8:00pm
Massachusetts	May 5, 2020	September 1, 2020[56]	September 1, 2020	N/A	August 25, 2020	November 3, 2020[56]	November 3, 2020	8:00pm
Michigan	May 8, 2020	July 24, 2020[57]	August 4, 2020	N/A	August 4, 2020	October 23, 2020[57]	November 3, 2020	8:00pm
Minnesota	June 2, 2020	May 19, 2020[58]	August 11, 2020	N/A	June 2, 2020	October 27, 2020[58]	November 3, 2020	9:00pm
Mississippi	January 10, 2020	Not necessary[z][59]	March 10, 2020	Not necessary	January 10, 2020	November 3, 2020[aa][59]	November 3, 2020	8:00pm
Montana	March 9, 2020	April 8, 2020[60]	June 2, 2020	N/A	June 1, 2020	September 9, 2020[60]	November 3, 2020	10:00pm
Nebraska	March 2, 2020	May 1, 2020[61]	May 12, 2020	N/A	August 3, 2020	October 23, 2020[61]	November 3, 2020	9:00pm
New Hampshire	June 12, 2020	September 8, 2020[62]	September 8, 2020	N/A	September 2, 2020	November 3, 2020[63]	November 3, 2020	8:00pm
New Jersey	March 30, 2020	July 7, 2020[64]	July 7, 2020	N/A	July 7, 2020	November 3, 2020[64]	November 3, 2020	8:00pm
New Mexico	March 10, 2020	March 17, 2020[65]	June 2, 2020	N/A	June 25, 2020	June 26, 2020[66]	November 3, 2020	9:00pm
North Carolina	December 20, 2019	Ineligible[67]	March 3, 2020	Not necessary	March 3, 2020	July 21, 2020[68]	November 3, 2020	7:30pm
Oklahoma	April 10, 2020	Ineligible[69]	June 30, 2020	Not necessary	April 10, 2020	Ineligible[54]	November 3, 2020	8:00pm
Oregon	March 10, 2020	May 19, 2020[70]	May 19, 2020	N/A	August 25, 2020	November 3, 2020[70]	November 3, 2020	10:00pm
Rhode Island	June 24, 2020	September 8, 2020[71]	September 8, 2020	N/A	June 24, 2020	November 3, 2020[71]	November 3, 2020	8:00pm
South Carolina	March 30, 2020	Ineligible[72]	June 9, 2020	Not necessary	July 20, 2020	November 3, 2020[73]	November 3, 2020	7:00pm
South Dakota	March 31, 2020	Ineligible[54]	June 2, 2020	Not necessary	April 28, 2020	Ineligible[54]	November 3, 2020	8:00pm
Tennessee	April 2, 2020	June 17, 2020[74]	August 6, 2020	N/A	April 2, 2020	September 14, 2020[75]	November 3, 2020	8:00pm
Texas	December 9, 2019	Ineligible[76]	March 3, 2020	July 14, 2020	August 13, 2020[ab]	August 17, 2020[77]	November 3, 2020	8:00pm
Virginia	March 26, 2020	Ineligible[78]	June 23, 2020	N/A	June 23, 2020	November 3, 2020[79]	November 3, 2020	7:00pm
West Virginia	January 25, 2020	Ineligible[80]	June 9, 2020	N/A	July 31, 2020	September 15, 2020[81]	November 3, 2020	7:30pm
Wyoming	May 29, 2020	August 18, 2020[ac][82]	August 18, 2020	N/A	August 25, 2020	November 3, 2020[83]	November 3, 2020	9:00pm

Gains, losses and holds

Retirements

Map of retirements:

  Republican incumbent

  Democratic incumbent

  Republican incumbent retiring

  Democratic incumbent retiring

One Democrat and three Republicans retired instead of seeking re-election.

State	Senator	Replaced by	Ref
Kansas	Pat Roberts	Roger Marshall	[84]
New Mexico	Tom Udall	Ben Ray Luján	[85]
Tennessee	Lamar Alexander	Bill Hagerty	[86]
Wyoming	Mike Enzi	Cynthia Lummis	[87]

Defeats

One Democrat and four Republicans sought re-election but lost in the general election, that included two interim appointees who also sought elections to finish the terms.

State	Senator	Replaced by
Alabama	Doug Jones	Tommy Tuberville
Arizona (special)	Martha McSally	Mark Kelly
Colorado	Cory Gardner	John Hickenlooper
Georgia (regular)	David Perdue	Jon Ossoff
Georgia (special)	Kelly Loeffler	Raphael Warnock

Post-election changes

One Democrat resigned shortly after the start of the 117th Congress and was replaced by Democratic appointee.

State	Senator	Replaced by
California (Class 3)	Kamala Harris	Alex Padilla

Race summary

Special elections during the preceding Congress

In each special election, the winner's term begins immediately after their election is certified by their state's government.

Elections are sorted by date then state.

State	Incumbent			Results	Candidates
	Senator	Party	Electoral history
Arizona (Class 3)	Martha McSally	Republican	2019 (appointed)	Interim appointee lost election. New senator elected November 3, 2020 and seated December 2, 2020. Democratic gain.	▌Y Mark Kelly (Democratic) 51.2% ▌Martha McSally (Republican) 48.8%
Georgia (Class 3)	Kelly Loeffler	Republican	2020 (appointed)	Interim appointee lost election. New senator elected January 5, 2021. Democratic gain. Winner delayed term until January 20, 2021, to the start of Biden administration.	▌Y Raphael Warnock (Democratic) 51.0%[88] ▌Kelly Loeffler (Republican) 49.0%[88]

Elections leading to the next Congress

In each general election, the winner is elected for the term beginning January 3, 2021.

State	Incumbent			Results	Candidates
	Senator	Party	Electoral history
Alabama	Doug Jones	Democratic	2017 (special)	Incumbent lost re-election. Republican gain.	▌Y Tommy Tuberville (Republican) 60.1% ▌Doug Jones (Democratic) 39.7%
Alaska	Dan Sullivan	Republican	2014	Incumbent re-elected.	▌Y Dan Sullivan (Republican) 53.9% ▌Al Gross (Independent) 41.2% ▌John Wayne Howe (AKIP) 4.7%
Arkansas	Tom Cotton	Republican	2014	Incumbent re-elected.	▌Y Tom Cotton (Republican) 66.5% ▌Ricky Dale Harrington Jr. (Libertarian) 33.5%
Colorado	Cory Gardner	Republican	2014	Incumbent lost re-election. Democratic gain.	▌Y John Hickenlooper (Democratic) 53.5% ▌Cory Gardner (Republican) 44.2% Others ▌Raymon Doane (Libertarian) 1.7% ▌Daniel Doyle (Approval Voting) 0.3% ▌Stephan "Seku" Evans (Unity) 0.3%
Delaware	Chris Coons	Democratic	2010 (special) 2014	Incumbent re-elected.	▌Y Chris Coons (Democratic) 59.4% ▌Lauren Witzke (Republican) 37.9% ▌Mark Turley (IPOD) 1.6% ▌Nadine Frost (Libertarian) 1.1%
Georgia	David Perdue	Republican	2014	Incumbent term expired but lost re-election. Democratic gain. Winner delayed term until January 20, 2021, to the start of Biden administration.	First round: ▌Y David Perdue (Republican) 49.7%[89] ▌Y Jon Ossoff (Democratic) 47.9%[89] ▌Shane Hazel (Libertarian) 0.4%[89] Runoff: ▌Y Jon Ossoff (Democratic) 50.6%[88] ▌David Perdue (Republican) 49.4%[88]
Idaho	Jim Risch	Republican	2008 2014	Incumbent re-elected.	▌Y Jim Risch (Republican) 62.6% ▌Paulette Jordan (Democratic) 33.3% ▌Natalie Fleming (Independent) 2.9% ▌Ray Writz (Constitution) 1.2%
Illinois	Dick Durbin	Democratic	1996 2002 2008 2014	Incumbent re-elected.	▌Y Dick Durbin (Democratic) 54.9% ▌Mark Curran (Republican) 38.9% ▌Willie Wilson (Willie Wilson Party) 4% ▌Danny Malouf (Libertarian) 1.3% ▌David F. Black (Green) 0.9%
Iowa	Joni Ernst	Republican	2014	Incumbent re-elected.	▌Y Joni Ernst (Republican) 51.8% ▌Theresa Greenfield (Democratic) 45.2% ▌Rick Stewart (Libertarian) 2.2% ▌Suzanne Herzog (Independent) 0.8%
Kansas	Pat Roberts	Republican	1996 2002 2008 2014	Incumbent retired. Republican hold.	▌Y Roger Marshall (Republican) 53.2% ▌Barbara Bollier (Democratic) 41.8% ▌Jason Buckley (Libertarian) 5.0%
Kentucky	Mitch McConnell	Republican	1984 1990 1996 2002 2008 2014	Incumbent re-elected.	▌Y Mitch McConnell (Republican) 57.8% ▌Amy McGrath (Democratic) 38.2% ▌Brad Barron (Libertarian) 4.0%
Louisiana	Bill Cassidy	Republican	2014	Incumbent re-elected.	▌Y Bill Cassidy (Republican) 59.3% ▌Adrian Perkins (Democratic) 19.0% ▌Champ Edwards (Democratic) 11.1% ▌Antoine Pierce (Democratic) 2.7% Others ▌Dustin Murphy (Republican) 1.9% ▌Drew David Knight (Democratic) 1.8% ▌Beryl Billiot (Independent) 0.8% ▌John Paul Bourgeois (Independent) 0.8% ▌Peter Wenstrup (Democratic) 0.7% ▌Aaron Sigler (Libertarian) 0.5% ▌Vinny Mendoza (Independent) 0.4% ▌Melinda Mary Price (Independent) 0.4% ▌Jamar Montgomery (Independent) 0.3% ▌Reno Daret III (Independent) 0.2% ▌Xan John (Independent) 0.1%
Maine	Susan Collins	Republican	1996 2002 2008 2014	Incumbent re-elected.	▌Y Susan Collins (Republican) 51% ▌Sara Gideon (Democratic) 42.4% ▌Lisa Savage (Independent) 5.0% ▌Max Linn (Independent) 1.6%
Massachusetts	Ed Markey	Democratic	2013 (special) 2014	Incumbent re-elected.	▌Y Ed Markey (Democratic) 66.2% ▌Kevin O'Connor (Republican) 33.0% Write-ins 0.8%
Michigan	Gary Peters	Democratic	2014	Incumbent re-elected.	▌Y Gary Peters (Democratic) 49.9% ▌John James (Republican) 48.2% Others ▌Valerie Willis (U.S. Taxpayers) 0.9% ▌Marcia Squier (Green) 0.7% ▌Doug Dern (Natural Law) 0.2%
Minnesota	Tina Smith	DFL	2018 (appointed) 2018 (special)	Incumbent re-elected.	▌Y Tina Smith (DFL) 48.8% ▌Jason Lewis (Republican) 43.5% ▌Kevin O'Connor (Legal Marijuana Now) 5.9% ▌Oliver Steinberg (Legalize Cannabis) 1.8%
Mississippi	Cindy Hyde-Smith	Republican	2018 (appointed) 2018 (special)	Incumbent re-elected.	▌Y Cindy Hyde-Smith (Republican) 54.1% ▌Mike Espy (Democratic) 44.1% ▌Jimmy Edwards (Libertarian) 1.8% Write-ins 0.1%
Montana	Steve Daines	Republican	2014	Incumbent re-elected.	▌Y Steve Daines (Republican) 55% ▌Steve Bullock (Democratic) 45%
Nebraska	Ben Sasse	Republican	2014	Incumbent re-elected.	▌Y Ben Sasse (Republican) 62.7% ▌Chris Janicek (Democratic) 24.4% ▌Preston Love Jr. (Democratic) (write-in) 6.3% ▌Gene Siadek (Libertarian) 5.0%
New Hampshire	Jeanne Shaheen	Democratic	2008 2014	Incumbent re-elected.	▌Y Jeanne Shaheen (Democratic) 56.7% ▌Corky Messner (Republican) 41.0% ▌Justin O'Donnell (Libertarian) 2.3%
New Jersey	Cory Booker	Democratic	2013 (special) 2014	Incumbent re-elected.	▌Y Cory Booker (Democratic) 57.2% ▌Rik Mehta (Republican) 40.9% Others ▌Madelyn R. Hoffman (Green) 0.9% ▌Veronica Fernandez (Of, By, For!) 0.7% ▌Daniel Burke (LaRouche was Right) 0.3%
New Mexico	Tom Udall	Democratic	2008 2014	Incumbent retired. Democratic hold.	▌Y Ben Ray Luján (Democratic) 51.7% ▌Mark Ronchetti (Republican) 45.6% ▌Bob Walsh (Libertarian) 2.6%
North Carolina	Thom Tillis	Republican	2014	Incumbent re-elected.	▌Y Thom Tillis (Republican) 48.7% ▌Cal Cunningham (Democratic) 46.9% ▌Shannon Bray (Libertarian) 3.1% ▌Kevin Hayes (Constitution) 1.2%
Oklahoma	Jim Inhofe	Republican	1994 (special) 1996 2002 2008 2014	Incumbent re-elected.	▌Y Jim Inhofe (Republican) 62.9% ▌Abby Broyles (Democratic) 32.8% Others ▌Robert Murphy (Libertarian) 2.2% ▌Joan Farr (Independent) 1.4% ▌A. D. Nesbit (Independent) 0.7%
Oregon	Jeff Merkley	Democratic	2008 2014	Incumbent re-elected.	▌Y Jeff Merkley (Democratic) 56.9% ▌Jo Rae Perkins (Republican) 39.3% Others ▌Gary Dye (Libertarian) 1.8% ▌Ibrahim Taher (Pacific Green) 1.8% Write-ins 0.1%
Rhode Island	Jack Reed	Democratic	1996 2002 2008 2014	Incumbent re-elected.	▌Y Jack Reed (Democratic) 66.6% ▌Allen Waters (Republican) 33.4%
South Carolina	Lindsey Graham	Republican	2002 2008 2014	Incumbent re-elected.	▌Y Lindsey Graham (Republican) 54.5% ▌Jaime Harrison (Democratic) 44.2% ▌Bill Bledsoe (Constitution) 1.3%
South Dakota	Mike Rounds	Republican	2014	Incumbent re-elected.	▌Y Mike Rounds (Republican) 65.7% ▌Dan Ahlers (Democratic) 34.3%
Tennessee	Lamar Alexander	Republican	2002 2008 2014	Incumbent retired. Republican hold.	▌Y Bill Hagerty (Republican) 62.2% ▌Marquita Bradshaw (Democratic) 35.2% Others ▌Elizabeth McLeod (Independent) 0.6% ▌Yomi Faparusi (Independent) 0.4% ▌Steven Hooper (Independent) 0.3% ▌Kacey Morgan (Independent) 0.3% ▌Ronnie Henley (Independent) 0.3% ▌Aaron James (Independent) 0.2% ▌Eric Stansberry (Independent) 0.2% ▌Dean Hill (Independent) 0.2% ▌Jeffrey Grunau (Independent) 0.1%
Texas	John Cornyn	Republican	2002 2002 (appointed) 2008 2014	Incumbent re-elected.	▌Y John Cornyn (Republican) 53.5% ▌MJ Hegar (Democratic) 43.9% ▌Kerry McKennon (Libertarian) 1.9% ▌David B. Collins (Green) 0.7%
Virginia	Mark Warner	Democratic	2008 2014	Incumbent re-elected.	▌Y Mark Warner (Democratic) 56% ▌Daniel Gade (Republican) 43.9%
West Virginia	Shelley Moore Capito	Republican	2014	Incumbent re-elected.	▌Y Shelley Moore Capito (Republican) 70.3% ▌Paula Jean Swearengin (Democratic) 27% ▌David Moran (Libertarian) 2.7%
Wyoming	Mike Enzi	Republican	1996 2002 2008 2014	Incumbent retired. Republican hold.	▌Y Cynthia Lummis (Republican) 73.1% ▌Merav Ben-David (Democratic) 26.9%

Closest races

12 races had a margin of victory under 10%:

State	Party of winner	Margin
Georgia (regular)	Democratic (flip)	1.23%[ad]
Michigan	Democratic	1.68%
North Carolina	Republican	1.75%
Georgia (special)	Democratic (flip)	2.08%
Arizona (special)	Democratic (flip)	2.35%
Minnesota	Democratic	5.24%
New Mexico	Democratic	6.11%
Iowa	Republican	6.59%
Maine	Republican	8.59%
Colorado	Democratic (flip)	9.32%
Texas	Republican	9.64%
Mississippi	Republican	9.97%

Alabama

Alabama election

Nominee Tommy Tuberville Doug Jones Party Republican Democratic Popular vote 1,392,076 920,478 Percentage 60.1% 39.7%

Tuberville:      50–60%      60–70%      70–80%      80-90% Jones:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Doug Jones Democratic Elected U.S. senator Tommy Tuberville Republican

Main article: 2020 United States Senate election in Alabama

See also: List of United States senators from Alabama and 2020 United States House of Representatives elections in Alabama

Incumbent Democrat Doug Jones was elected in a special election in 2017, narrowly defeating Republican nominee Roy Moore.^[90][91] He ran for a full term in 2020, losing to Republican Tommy Tuberville in a landslide.

Tuberville is a former football head coach for Auburn University. He defeated former senator and attorney general Jeff Sessions in a July 14 run-off to secure the Republican nomination, after securing President Donald Trump's endorsement. Sessions occupied the seat until 2017 when he resigned to become attorney general in the Trump administration.

Alabama is one of the country's most Republican states, and Jones's win was in part due to sexual assault allegations against nominee Roy Moore during the special election; most analysts expected the seat to flip back to GOP control. Tuberville defeated Jones by more than 20 percentage points.^[92]

Alabama Republican primary^[93]

Party		Candidate	Votes	%
	Republican	Tommy Tuberville	239,616	33.39
	Republican	Jeff Sessions	227,088	31.64
	Republican	Bradley Byrne	178,627	24.89
	Republican	Roy Moore	51,377	7.16
	Republican	Ruth Page Nelson	7,200	1.00
	Republican	Arnold Mooney	7,149	1.00
	Republican	Stanley Adair	6,608	0.92
Total votes			717,665	100.00

Alabama Republican primary runoff^[93]

Party		Candidate	Votes	%
	Republican	Tommy Tuberville	334,675	60.73
	Republican	Jeff Sessions	216,452	39.27
Total votes			551,127	100.00

Alabama general election^[94]

Party		Candidate	Votes	%	±%
	Republican	Tommy Tuberville	1,392,076	60.10%	+11.76
	Democratic	Doug Jones (incumbent)	920,478	39.74%	–10.23
	Write-in		3,891	0.17%	–1.52
Total votes			2,316,445	100.00%
	Republican gain from Democratic

Alaska

Alaska election

Nominee Dan Sullivan Al Gross[ae] Party Republican Independent Popular vote 191,112 146,068 Percentage 53.90% 41.19%

State house district results Borough and census area results Borough and census area results Sullivan:      40–50%      50–60%      60–70%      70–80% Gross:      40–50%      50–60%      60–70%      70-80%

U.S. senator before election Dan Sullivan Republican Elected U.S. senator Dan Sullivan Republican

Main article: 2020 United States Senate election in Alaska

See also: List of United States senators from Alaska and 2020 United States House of Representatives election in Alaska

One-term Republican Dan Sullivan was elected in 2014, defeating incumbent Democrat Mark Begich. He defeated independent challenger Al Gross to win a second term in office.^[95]

Potential Democratic candidates included Begich, who was the Democratic nominee for governor of Alaska in 2018, and Anchorage mayor Ethan Berkowitz, who was the Democratic nominee for governor of Alaska in 2010. One Democrat, Edgar Blatchford, filed to run by the June 1 filing deadline.^[96]

Gross, an orthopedic surgeon and fisherman, declared his candidacy on July 2, 2019, as an independent.^[97] He participated in a joint primary for the Alaska Democratic Party, Alaska Libertarian Party and Alaskan Independence Party, winning the nomination as an independent supported by the Democratic Party.

Despite predictions of a close race, Sullivan defeated Gross by 12.7 percentage points.^[98]

Alaska Republican primary^[99]

Party		Candidate	Votes	%
	Republican	Dan Sullivan (incumbent)	65,257	100.00
Total votes			65,257	100.00

Alaska Democratic–Libertarian–Independence primary^[99]

Party		Candidate	Votes	%
	Independent	Al Gross	50,047	79.87
	Democratic	Edgar Blatchford	5,463	8.72
	Independence	John Howe	4,165	6.65
	Independent	Christopher Cumings	2,989	4.77
Total votes			62,664	100.00

Alaska general election^[100]

Party		Candidate	Votes	%	±%
	Republican	Dan Sullivan (incumbent)	191,112	53.90%	+5.94
	Independent	Al Gross	146,068	41.19%	–4.64
	Independence	John Howe	16,806	4.74%	+1.02
	Write-in		601	0.17%	–0.32
Total votes			354,587	100.00%
	Republican hold

Arizona (special)

Arizona special election

Nominee Mark Kelly Martha McSally Party Democratic Republican Popular vote 1,716,467 1,637,661 Percentage 51.2% 48.8%

County results Kelly:      50–60%      60–70%      70–80% McSally:      50–60%      60–70%      70–80%

U.S. senator before election Martha McSally Republican Elected U.S. senator Mark Kelly Democratic

Main article: 2020 United States Senate special election in Arizona

See also: List of United States senators from Arizona and 2020 United States House of Representatives elections in Arizona

Six-term Republican John McCain was re-elected in 2016, but died in office on August 25, 2018, after a battle with brain cancer.^[101] Republican governor Doug Ducey appointed former senator Jon Kyl to fill the seat temporarily.^[102] After Kyl stepped down at the end of the year, Ducey appointed outgoing U.S. Representative Martha McSally to replace him after she lost the election to the other Arizona senate seat.^[103] McSally ran in the 2020 special election to fill the remaining two years of the term,^[104] losing to Democrat Mark Kelly, a former astronaut.

Once a solidly Republican state, Arizona trended more purple in the late 2010s. Incumbent Republican Martha McSally was appointed to the late John McCain's seat two months after losing the 2018 Arizona U.S. Senate election to Democrat Kyrsten Sinema. Her Democratic opponent, astronaut Mark Kelly, raised significantly more money and generally led her by 5 to 15 points in the polling. McSally also suffered from low approval ratings due to her strong allegiance to Trump, who was unpopular in Arizona despite having won the state by 3.5 points in 2016.^[105]

Arizona Republican primary^[106]

Party		Candidate	Votes	%
	Republican	Martha McSally (incumbent)	551,119	75.20
	Republican	Daniel McCarthy	181,551	24.77
	Write-in		210	0.03
Total votes			732,880	100.00

Arizona Democratic primary^[106]

Party		Candidate	Votes	%
	Democratic	Mark Kelly	665,620	99.93
	Write-in		451	0.07
Total votes			666,071	100.00

Arizona special election^[107]

Party		Candidate	Votes	%	±%
	Democratic	Mark Kelly	1,716,467	51.16%	+10.41
	Republican	Martha McSally (incumbent)	1,637,661	48.81%	–4.90
	Write-in		1,189	0.03%	–0.03
Total votes			3,355,317	100.00%
	Democratic gain from Republican

Arkansas

Arkansas election

Nominee Tom Cotton Ricky Dale Harrington Jr. Party Republican Libertarian Popular vote 793,871 399,390 Percentage 66.5% 33.5%

County results Cotton:      50–60%      60–70%      70–80%      80–90% Harrington:      50–60%

U.S. senator before election Tom Cotton Republican Elected U.S. senator Tom Cotton Republican

Main article: 2020 United States Senate election in Arkansas

See also: List of United States senators from Arkansas and 2020 United States House of Representatives elections in Arkansas

One-term Republican Tom Cotton was elected in 2014, after serving two years in the United States House of Representatives, defeating incumbent Democratic senator Mark Pryor by a comfortable margin. Cotton was re-elected to a second term by a 33-point margin, defeating Libertarian Ricky Dale Harrington Jr.^{[108][109][110]}

Joshua Mahony, a non-profit executive and 2018 Democratic nominee for Congress in Arkansas's 3rd congressional district, filed to run for the Democratic nomination,^[111] but dropped out just after the filing deadline.^[112] No other Democrats filed within the filing deadline. Progressive activist Dan Whitfield ran as an independent, but suspended his campaign on October 1, 2020, after failing to qualify for the ballot.^[113]

Arkansas general election^[114]

Party		Candidate	Votes	%	±%
	Republican	Tom Cotton (incumbent)	793,871	66.53%	+10.03
	Libertarian	Ricky Dale Harrington Jr.	399,390	33.47%	+31.44
Total votes			1,193,261	100.00%
	Republican hold

Colorado

Colorado election

Nominee John Hickenlooper Cory Gardner Party Democratic Republican Popular vote 1,731,114 1,429,492 Percentage 53.5% 44.2%

County results Hickenlooper:      40–50%      50–60%      60–70%      70–80% Gardner:      40–50%      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Cory Gardner Republican Elected U.S. senator John Hickenlooper Democratic

Main article: 2020 United States Senate election in Colorado

See also: List of United States senators from Colorado and 2020 United States House of Representatives elections in Colorado

One-term Republican Cory Gardner was elected in 2014 after serving four years in the United States House of Representatives, narrowly defeating one-term Democrat Mark Udall. Gardner sought a second term but lost to Democrat John Hickenlooper by 9.3 percentage points.^[115]

Hickenlooper is a popular former governor of Colorado, and led Gardner by as much as 20 percentage points in polls, with most pundits considering him a heavy favorite. Gardner was Colorado's only Republican statewide officeholder, and the once purple state has trended increasingly Democratic since his narrow win in 2014. Gardner also had low approval ratings due to his strong allegiance to Trump, who lost Colorado in 2016 to Hillary Clinton by 4.9%, and in 2020 to Joe Biden by 13.5%.^[116][117] Hickenlooper also raised significantly more money than Gardner.^[118]

Colorado Republican primary^[119]

Party		Candidate	Votes	%
	Republican	Cory Gardner (incumbent)	554,806	100.00
Total votes			554,806	100.00

Colorado Democratic primary^[120]

Party		Candidate	Votes	%
	Democratic	John Hickenlooper	585,826	58.65
	Democratic	Andrew Romanoff	412,955	41.35
Total votes			998,781	100.00

Colorado general election^[121]

Party		Candidate	Votes	%	±%
	Democratic	John Hickenlooper	1,731,114	53.50%	+7.24
	Republican	Cory Gardner (incumbent)	1,429,492	44.18%	–4.03
	Libertarian	Raymon Doane	56,262	1.74%	–0.85
	Approval Voting	Daniel Doyle	9,820	0.30%	N/A
	Unity	Stephen Evans	8,971	0.28%	–0.04
Total votes			3,235,659	100.00%
	Democratic gain from Republican

Delaware

Delaware election

Nominee Chris Coons Lauren Witzke Party Democratic Republican Popular vote 291,804 186,054 Percentage 59.4% 37.9%

County results Coons:      50–60%      60–70% Witzke:      50–60%

U.S. senator before election Chris Coons Democratic Elected U.S. senator Chris Coons Democratic

Main article: 2020 United States Senate election in Delaware

See also: List of United States senators from Delaware and 2020 United States House of Representatives election in Delaware

One-term Democrat Chris Coons was re-elected in 2014; he first took office after winning a 2010 special election, which occurred after long-time senator Joe Biden resigned to become vice president of the United States (Biden also won the 2020 presidential election and became president). He faced an unsuccessful primary challenge from technology executive Jessica Scarane. Conservative activist Lauren Witzke and attorney Jim DeMartino ran for the Republican nomination.

The Delaware primary was held on September 15, 2020.^[122]

Delaware Democratic primary^[123]

Party		Candidate	Votes	%
	Democratic	Chris Coons (incumbent)	87,332	72.85
	Democratic	Jessica Scarane	32,547	27.15
Total votes			119,879	100.00

Republican primary results^[123]

Party		Candidate	Votes	%
	Republican	Lauren Witzke	30,702	56.89
	Republican	James DeMartino	23,266	43.11
Total votes			53,968	100.00

Delaware general election^[124]

Party		Candidate	Votes	%	±%
	Democratic	Chris Coons (incumbent)	291,804	59.44%	+3.61
	Republican	Lauren Witzke	186,054	37.90%	–4.33
	Independent Party	Mark Turley	7,833	1.59%	N/A
	Libertarian	Nadine Frost	5,244	1.07%	N/A
Total votes			490,935	100.00%
	Democratic hold

Georgia

See also: List of United States senators from Georgia and 2020 United States House of Representatives elections in Georgia

Due to Republican senator Johnny Isakson's resignation from office for health reasons in 2019, both of Georgia's Senate seats were up for election in November 2020.^[125] The state had tilted Republican in Senate races since the mid-1990s, but increased support for Democrats in populous suburbs has made office elections more competitive; a close governor's race, multiple close U.S. House races, and many other close local office races resulted in Democratic gains in 2018 elections. Both the regular and special election were considered highly competitive toss-ups.^[126] Both of these elections received national attention, as if Republicans won at least one of these seats, they would maintain a Senate majority, but if the Democrats won both, the Senate would be split 50/50 with Vice President Kamala Harris breaking the tie.

Georgia (regular)

2020–21 United States Senate election in Georgia

November 3, 2020 (first round) January 5, 2021 (runoff)
Turnout	65.4% (first round) 61.5% (runoff)
Candidate Jon Ossoff David Perdue Party Democratic Republican First round 2,374,519 47.95% 2,462,617 49.73% Runoff 2,269,923 50.61% 2,214,979 49.39%
First round county results Runoff county results County results Ossoff:      50–60%      60–70%      70–80%      80–90% Perdue:      40–50%      50–60%      60–70%      70–80%      80–90%      >90%
U.S. senator before election David Perdue Republican Elected U.S. Senator Jon Ossoff Democratic

Main article: 2020–21 United States Senate election in Georgia

One-term Republican David Perdue was elected in 2014, and sought a second term.^[127]

Jon Ossoff, a former congressional candidate, documentary film producer, and investigative journalist, defeated former Columbus mayor Teresa Tomlinson and 2018 lieutenant governor nominee Sarah Riggs Amico in the Democratic primary to secure nomination.^[128][129] He faced incumbent Republican David Perdue in the November 3 election.

In the November election, no candidate received 50% or more of the total vote; per Georgia law, the election advanced to a run-off between the top two finishers, Ossoff and Perdue, on January 5, 2021. Ossoff was projected the winner on January 6,^[130] and Perdue conceded on January 8.^[131]

Georgia Republican primary^[132]

Party		Candidate	Votes	%
	Republican	David Perdue (incumbent)	992,555	100.00
Total votes			992,555	100.00

Georgia Democratic primary^[133]

Party		Candidate	Votes	%
	Democratic	Jon Ossoff	626,819	52.82
	Democratic	Teresa Tomlinson	187,416	15.79
	Democratic	Sarah Riggs Amico	139,574	11.76
	Democratic	Maya Dillard-Smith	105,000	8.85
	Democratic	James Knox	49,452	4.17
	Democratic	Marckeith DeJesus	45,936	3.87
	Democratic	Tricia Carpenter McCracken	32,463	2.74
Total votes			1,186,660	100.00

Georgia general election^[89]

Party		Candidate	Votes	%	±%
	Republican	David Perdue (incumbent)	2,462,617	49.73%	–3.16
	Democratic	Jon Ossoff	2,374,519	47.95%	+2.74
	Libertarian	Shane T. Hazel	115,039	2.32%	+0.42
Total votes			4,952,175	100.00%

Georgia general election runoff^[134]

Party		Candidate	Votes	%	±%
	Democratic	Jon Ossoff	2,269,923	50.61%	+5.40
	Republican	David Perdue (incumbent)	2,214,979	49.39%	–3.50
Total votes			4,484,902	100.00%
	Democratic gain from Republican

Georgia (special)

2020–21 United States Senate special election in Georgia

November 3, 2020 (first round) January 5, 2021 (runoff)
Turnout	65.3% (first round) 59.7% (runoff)
Candidate Raphael Warnock Kelly Loeffler Party Democratic Republican First round 1,617,035 32.90% 1,273,214 25.91% Runoff 2,289,113 51.04% 2,195,841 48.96%   Candidate Doug Collins Deborah Jackson Party Republican Democratic First round 980,454 19.95% 324,118 6.59% Runoff Eliminated Eliminated
First round county results Runoff county results Warnock:      20–30%      30–40%      40–50%      50–60%      60–70%      70–80%      80–90% Loeffler:      20–30%      30–40%      40–50%      50–60%      60–70%      70–80%      80–90%      >90% Collins:      20–30%      30–40%      40–50%      50–60%
U.S. senator before election Kelly Loeffler Republican Elected U.S. Senator Raphael Warnock Democratic

Main article: 2020–21 United States Senate special election in Georgia

Three-term senator Johnny Isakson announced on August 28, 2019, that he would resign from the Senate on December 31, 2019, citing health concerns.^[135] Georgia governor Brian Kemp appointed Republican Kelly Loeffler to replace Isakson until a special election could be held; Loeffler took office on January 6, 2020, and competed in the November 2020 election to retain her seat.^[136]

Other Republicans who ran for the seat included Wayne Johnson, former chief operating officer of the Office of Federal Student Aid,^[137] and four-term U.S. representative Doug Collins.^[138]

A "jungle primary" was held November 3, 2020, but no candidate won more than 50% of the vote, so a run-off election between the top two finishers, Loeffler and Democratic challenger Raphael Warnock, was held on January 5, 2021.^[139] Warnock defeated Loeffler, who initially refused to concede and vowed to challenge the outcome,^[140] but conceded on January 7, after the storming of the U.S. Capitol.^[141]

Georgia special election^[142]

Party		Candidate	Votes	%
	Democratic	Raphael Warnock	1,617,035	32.90
	Republican	Kelly Loeffler (incumbent)	1,273,214	25.91
	Republican	Doug Collins	980,454	19.95
	Democratic	Deborah Jackson	324,118	6.59
	Democratic	Matt Lieberman	136,021	2.77
	Democratic	Tamara Johnson-Shealey	106,767	2.17
	Democratic	Jamesia James	94,406	1.92
	Republican	Derrick Grayson	51,592	1.05
	Democratic	Joy Felicia Slade	44,945	0.91
	Republican	Annette Davis Jackson	44,335	0.90
	Republican	Kandiss Taylor	40,349	0.82
	Republican	Wayne Johnson (withdrawn)	36,176	0.74
	Libertarian	Brian Slowinski	35,431	0.72
	Democratic	Richard Dien Winfield	28,687	0.58
	Democratic	Ed Tarver	26,333	0.54
	Independent	Allen Buckley	17,954	0.36
	Green	John Fortuin	15,293	0.31
	Independent	Al Bartell	14,640	0.30
	Independent	Valencia Stovall	13,318	0.27
	Independent	Michael Todd Greene	13,293	0.27
Total votes			4,914,361	100.00

Georgia special election runoff^[143]

Party		Candidate	Votes	%	±%
	Democratic	Raphael Warnock	2,289,113	51.04%	+10.00
	Republican	Kelly Loeffler (incumbent)	2,195,841	48.96%	–5.84
Total votes			4,484,954	100.00%
	Democratic gain from Republican

Idaho

Idaho election

Nominee Jim Risch Paulette Jordan Party Republican Democratic Popular vote 537,446 285,864 Percentage 62.6% 33.3%

County results Risch:      50–60%      60–70%      70–80%      80–90% Jordan:      50–60%      60–70%

U.S. senator before election Jim Risch Republican Elected U.S. senator Jim Risch Republican

Main article: 2020 United States Senate election in Idaho

See also: List of United States senators from Idaho and 2020 United States House of Representatives elections in Idaho

Two-term republican Jim Risch successfully ran for a third term in 2020, defeating Democrat Paulette Jordan in a landslide. Jordan is a former gubernatorial nominee and former Coeur d'Alene Tribal Councilwoman.

Idaho Republican primary^[144]

Party		Candidate	Votes	%
	Republican	Jim Risch (incumbent)	200,184	100.00
Total votes			200,184	100.00

Idaho Democratic primary^[144]

Party		Candidate	Votes	%
	Democratic	Paulette Jordan	72,778	85.70
	Democratic	James Vandermaas	12,145	14.30
Total votes			84,923	100.00

Idaho general election^[145]

Party		Candidate	Votes	%	±%
	Republican	Jim Risch (incumbent)	538,446	62.62%	–2.71
	Democratic	Paulette Jordan	285,864	33.25%	–1.42
	Independent	Natalie Fleming	25,329	2.95%	N/A
	Constitution	Ray Writz	10,188	1.18%	N/A
Total votes			859,827	100.00%
	Republican hold

Illinois

Illinois election

Nominee Dick Durbin Mark Curran Party Democratic Republican Popular vote 3,278,930 2,319,870 Percentage 54.9% 38.9%

County results Durbin:      40–50%      50–60%      60–70%      70–80% Curran:      40–50%      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Dick Durbin Democratic Elected U.S. senator Dick Durbin Democratic

Main article: 2020 United States Senate election in Illinois

See also: List of United States senators from Illinois and 2020 United States House of Representatives elections in Illinois

Four-term democrat and Senate minority whip Dick Durbin, easily won a fifth term in office, defeating Republican Mark Curran by a 16-point margin.^[146]

Curran served as sheriff of Lake County from 2006 to 2018 and won the Republican primary with 41.55% of the vote.^[147]

Antiwar activist Marilyn Jordan Lawlor^[148] and state representative Anne Stava-Murray^[149] briefly challenged Durbin in the Democratic primary, but both ended up withdrawing.^[150][151]

2019 Chicago mayoral candidate Willie Wilson, a businessman and perennial candidate, ran as a member of the "Willie Wilson Party," with the backing of a handful of Chicago aldermen and the Chicago Police Union.

Illinois Democratic primary^[152]

Party		Candidate	Votes	%
	Democratic	Dick Durbin (incumbent)	1,446,118	100.00
Total votes			1,446,118	100.00

Illinois Republican primary^[152]

Party		Candidate	Votes	%
	Republican	Mark Curran	205,747	41.55
	Republican	Peggy Hubbard	113,189	22.86
	Republican	Robert Marshall	75,561	15.26
	Republican	Tom Tarter	73,009	14.74
	Republican	Casey Chlebek	27,655	5.58
	Write-in		7	0.00
Total votes			495,168	100.00

Illinois general election^[153]

Party		Candidate	Votes	%	±%
	Democratic	Dick Durbin (incumbent)	3,278,930	54.93%	+1.38
	Republican	Mark Curran	2,319,870	38.87%	–3.82
	Willie Wilson	Willie Wilson	237,699	3.98%	N/A
	Libertarian	Danny Malouf	75,673	1.27%	–2.49
	Green	David Black	55,711	0.95%	N/A
	Write-in		18	0.00%	±0.00
Total votes			5,967,901	100.00%
	Democratic hold

Iowa

Iowa election

Nominee Joni Ernst Theresa Greenfield Party Republican Democratic Popular vote 864,997 754,859 Percentage 51.7% 45.2%

County results Ernst:      40–50%      50–60%      60–70%      70–80%      80–90% Greenfield:      40–50%      50–60%      60–70%

U.S. senator before election Joni Ernst Republican Elected U.S. senator Joni Ernst Republican

Main article: 2020 United States Senate election in Iowa

See also: List of United States senators from Iowa and 2020 United States House of Representatives elections in Iowa

One-term republican Joni Ernst, first elected to the Senate in 2014, won a second term in office, defeating Democrat Theresa Greenfield.^[154]

Greenfield won the Democratic nomination, defeating former vice-admiral Michael T. Franken, attorney Kimberly Graham, and businessman Eddie Mauro in the primary.

Ernst's popularity had dropped in polls, and many considered this seat a possible Democratic pick-up, but Ernst was re-elected by a larger-than-expected 6.5 points.

Iowa Republican primary^[155]

Party		Candidate	Votes	%
	Republican	Joni Ernst (incumbent)	226,589	98.64
	Write-in		3,132	1.36
Total votes			229,721	100.00

Democratic primary results^[155]

Party		Candidate	Votes	%
	Democratic	Theresa Greenfield	132,001	47.71
	Democratic	Michael T. Franken	68,851	24.88
	Democratic	Kimberly Graham	41,554	15.02
	Democratic	Eddie Mauro	30,400	10.99
	Democratic	Cal Woods (withdrawn)	3,372	1.21
	Write-in		514	0.19
Total votes			276,692	100.00

Iowa general election^[156]

Party		Candidate	Votes	%	±%
	Republican	Joni Ernst (incumbent)	864,997	51.74%	–0.36
	Democratic	Theresa Greenfield	754,859	45.15%	+1.39
	Libertarian	Rick Stewart	36,961	2.21%	+1.48
	Independent	Suzanne Herzog	13,800	0.83%	N/A
	Write-in		1,211	0.07%	–0.03
Total votes			1,671,828	100.00%
	Republican hold

Kansas

Kansas election

Nominee Roger Marshall Barbara Bollier Party Republican Democratic Popular vote 727,962 571,530 Percentage 53.2% 41.8%

County results Marshall:      50–60%      60–70%      70–80%      80–90%      >90% Bollier:      40–50%      50–60%      60–70%

U.S. senator before election Pat Roberts Republican Elected U.S. senator Roger Marshall Republican

Main article: 2020 United States Senate election in Kansas

See also: List of United States senators from Kansas and 2020 United States House of Representatives elections in Kansas

Four-term Republican Pat Roberts, was re-elected in 2014 with 53.15% of the vote, and announced on January 4, 2019, that he would not be running for re-election in 2020.

In the Republican primary, United States representative Roger Marshall defeated former Kansas secretary of state Kris Kobach,^[157] state Turnpike Authority chairman Dave Lindstrom,^[158] state senate president Susan Wagle, and others.^[159]

There was considerable speculation about a Senate bid by Mike Pompeo (the United States secretary of state, former director of the Central Intelligence Agency, and former U.S. representative for Kansas's 4th congressional district), but he did not run.^[160][161]

Barbara Bollier, a state senator and former Republican,^[162] defeated former congressional candidate Robert Tillman^[163] for the Democratic nomination, but lost to Marshall with a more than expected 11.4 point margin.

Kansas Republican primary^[164]

Party		Candidate	Votes	%
	Republican	Roger Marshall	167,800	40.28
	Republican	Kris Kobach	108,726	26.10
	Republican	Bob Hamilton	77,952	18.71
	Republican	Dave Lindstrom	27,451	6.59
	Republican	Steve Roberts	8,141	1.95
	Republican	Brian Matlock	7,083	1.70
	Republican	Lance Berland	6,404	1.54
	Republican	John Miller	4,431	1.06
	Republican	Derek Ellis	3,970	0.95
	Republican	Gabriel Robles	3,744	0.90
	Republican	John Berman	861	0.21
Total votes			416,563	100.00

Kansas Democratic primary^[164]

Party		Candidate	Votes	%
	Democratic	Barbara Bollier	168,759	85.34
	Democratic	Robert Tillman	28,997	14.66
Total votes			197,756	100.00

Kansas general election^[165]

Party		Candidate	Votes	%	±%
	Republican	Roger Marshall	727,962	53.22%	+0.07
	Democratic	Barbara Bollier	571,530	41.79%	N/A
	Libertarian	Jason Buckley	68,263	4.99%	+0.67
Total votes			1,367,755	100.00%
	Republican hold

Kentucky

Kentucky election

Nominee Mitch McConnell Amy McGrath Party Republican Democratic Popular vote 1,233,315 816,257 Percentage 57.8% 38.2%

County results McConnell:      50–60%      60–70%      70–80%      80-90% McGrath:      50–60%

U.S. senator before election Mitch McConnell Republican Elected U.S. senator Mitch McConnell Republican

Main article: 2020 United States Senate election in Kentucky

See also: List of United States senators from Kentucky and 2020 United States House of Representatives elections in Kentucky

Republican Mitch McConnell, the Senate Majority Leader, defeated Democrat Amy McGrath by 19.6 percentage points, winning a 7th term in office.

Kentucky Republican primary^[166]

Party		Candidate	Votes	%
	Republican	Mitch McConnell (incumbent)	342,660	82.80
	Republican	Wesley Morgan	25,588	6.18
	Republican	Louis Grider	13,771	3.33
	Republican	Paul John Frangedakis	11,957	2.89
	Republican	Neren James	10,693	2.58
	Republican	Kenneth Lowndes	5,548	1.34
	Republican	Nicholas Alsager	3,603	0.87
Total votes			413,820	100.00

Kentucky Democratic primary^[166]

Party		Candidate	Votes	%
	Democratic	Amy McGrath	247,037	45.41
	Democratic	Charles Booker	231,888	42.62
	Democratic	Mike Broihier	27,175	4.99
	Democratic	Mary Ann Tobin	11,108	2.04
	Democratic	Maggie Joe Hilliard	6,224	1.14
	Democratic	Andrew Maynard	5,974	1.10
	Democratic	Bennie J. Smith	5,040	0.93
	Democratic	Jimmy Ausbrooks (withdrawn)	3,629	0.67
	Democratic	Eric Rothmuller	2,995	0.55
	Democratic	John R. Sharpensteen	2,992	0.55
Total votes			544,062	100.00

Kentucky general election^[167]

Party		Candidate	Votes	%	±%
	Republican	Mitch McConnell (incumbent)	1,233,315	57.76%	+1.57
	Democratic	Amy McGrath	816,257	38.23%	–2.49
	Libertarian	Brad Barron	85,386	4.00%	+0.92
	Write-in		99	0.01%	±0.00
Total votes			2,135,057	100.00%
	Republican hold

Louisiana

Louisiana election

Nominee Bill Cassidy Adrian Perkins Derrick Edwards Party Republican Democratic Democratic Popular vote 1,228,908 394,049 229,814 Percentage 59.3% 19.0% 11.1%

Parish results Cassidy:      30–40%      40–50%      50–60%      60–70%      70–80%      80–90% Perkins:      40–50%

U.S. senator before election Bill Cassidy Republican Elected U.S. senator Bill Cassidy Republican

Main article: 2020 United States Senate election in Louisiana

See also: List of United States senators from Louisiana and 2020 United States House of Representatives elections in Louisiana

Republican Bill Cassidy won a second term in office, defeating Democrat Adrian Perkins and others.^[168]

A Louisiana primary (a form of jungle primary) was held on November 3. Had no candidate won a majority of the vote in the primary, a run-off election would have been held, but Cassidy won in the first round.

Louisiana blanket primary^[169]

Party		Candidate	Votes	%
	Republican	Bill Cassidy (incumbent)	1,228,908	59.32
	Democratic	Adrian Perkins	394,049	19.02
	Democratic	Derrick Edwards	229,814	11.09
	Democratic	Antoine Pierce	55,710	2.69
	Republican	Dustin Murphy	38,383	1.85
	Democratic	Drew Knight	36,962	1.78
	Independent	Beryl Billiot	17,362	0.84
	Independent	John Paul Bourgeois	16,518	0.80
	Democratic	Peter Wenstrup	14,454	0.70
	Libertarian	Aaron Sigler	11,321	0.55
	Independent	M.V. "Vinny" Mendoza	7,811	0.38
	Independent	Melinda Mary Price	7,680	0.37
	Independent	Jamar Montgomery	5,804	0.28
	Independent	Reno Jean Daret III	3,954	0.19
	Independent	Alexander "Xan" John	2,813	0.14
Total votes			2,071,543	100.00
	Republican hold

Maine

Maine election

Nominee Susan Collins Sara Gideon Party Republican Democratic Popular vote 417,645[af] 347,223[af] Percentage 50.98% 42.39%

County results Municipality results Collins:      40–50%      50–60%      60–70%      70–80%      80–90%      >90% Gideon:      40–50%      50–60%      60–70%      70–80% Tie:

U.S. senator before election Susan Collins Republican Elected U.S. senator Susan Collins Republican

Main article: 2020 United States Senate election in Maine

See also: List of United States senators from Maine and 2020 United States House of Representatives elections in Maine

Republican Susan Collins won a fifth term in office, defeating Speaker of the Maine House of Representatives Sara Gideon.^[170]

Gideon consistently led Collins in polls for almost the entire election cycle. Collins is considered one of the most moderate Republicans in the Senate and had never faced a competitive re-election campaign, even though Maine leans Democratic. But she faced growing unpopularity due to her increasingly conservative voting record, and her votes to confirm Brett Kavanaugh to the Supreme Court and to acquit Trump in his impeachment trial. Despite almost all polling and Gideon's formidable funding,^[171] Collins was re-elected by a surprising 8.6-point margin.

Educator and activist Lisa Savage also ran as a candidate for the Green party.^[172]

Maine Republican primary^[173]

Party		Candidate	Votes	%
	Republican	Susan Collins (incumbent)	87,375	98.79
	Write-in		1,073	1.21
Total votes			88,448	100.00

Maine Democratic primary^[174]

Party		Candidate	Votes	%
	Democratic	Sara Gideon	116,264	71.47
	Democratic	Betsy Sweet	37,327	22.94
	Democratic	Bre Kidman	9,090	5.59
Total votes			162,681	100.00

Maine general election^[175]

Party		Candidate	Votes	%	±%
	Republican	Susan Collins (incumbent)	417,645	50.98%	–17.48
	Democratic	Sara Gideon	347,223	42.39%	+10.89
	Independent	Lisa Savage	40,579	4.95%	N/A
	Independent	Max Linn	13,508	1.65%	N/A
	Write-in		228	0.03%	–0.01
Total votes			819,183	100.00%
	Republican hold

Massachusetts

Massachusetts election

Nominee Ed Markey Kevin O'Connor Party Democratic Republican Popular vote 2,357,809 1,177,765 Percentage 66.15% 33.05%

County results Municipality results Markey:      40–50%      50–60%      60–70%      70–80%      80–90%      >90% O'Connor:      40–50%      50–60%      60–70% Tie:      40–50%

U.S. senator before election Ed Markey Democratic Elected U.S. senator Ed Markey Democratic

Main article: 2020 United States Senate election in Massachusetts

See also: List of United States senators from Massachusetts and 2020 United States House of Representatives elections in Massachusetts

Democrat Ed Markey was re-elected in 2014, having won a 2013 special election to replace long-time incumbent John Kerry, who resigned to become U.S. secretary of state. He easily won a second full term in 2020, defeating Republican Kevin O'Connor by more than 33 percentage points.^[176]

Markey fended off a primary challenge from Joe Kennedy III, four-term U.S. representative for Massachusetts's Fourth District and grandson of former U.S. senator and U.S. attorney general Robert F. Kennedy. This marked the first time a member of the Kennedy family lost an election in Massachusetts.^[177]

O'Connor defeated Shiva Ayyadurai, a former independent senate candidate, in the Republican primary.^[178][179]

On August 24, 2020, perennial candidate Vermin Supreme launched a write-in campaign for the Libertarian nomination,^[180] but received too few votes to qualify for the general election ballot.^[181]

Massachusetts Democratic primary^[182]

Party		Candidate	Votes	%
	Democratic	Ed Markey (incumbent)	782,694	55.35
	Democratic	Joe Kennedy III	629,359	44.51
	Write-in		1,935	0.14
Total votes			1,413,988	100.00

Massachusetts Republican primary^[182]

Party		Candidate	Votes	%
	Republican	Kevin O'Connor	158,590	59.71
	Republican	Shiva Ayyadurai	104,782	39.45
	Write-in		2,245	0.84
Total votes			265,617	100.00

Massachusetts general election^[183]

Party		Candidate	Votes	%	±%
	Democratic	Ed Markey (incumbent)	2,357,809	66.15%	+4.28
	Republican	Kevin O'Connor	1,177,765	33.05%	–4.93
	Write-in	Shiva Ayyadurai	21,134	0.59%	N/A
	Write-in		7,428	0.21%	+0.06
Total votes			3,564,136	100.00%
	Democratic hold

Michigan

Michigan election

Nominee Gary Peters John James Party Democratic Republican Popular vote 2,734,568 2,642,233 Percentage 49.9% 48.2%

County results Peters:      40–50%      50–60%      60–70%      70–80% James:      40–50%      50–60%      60–70%      70–80%

U.S. senator before election Gary Peters Democratic Elected U.S. senator Gary Peters Democratic

Main article: 2020 United States Senate election in Michigan

See also: List of United States senators from Michigan and 2020 United States House of Representatives elections in Michigan

Democrat Gary Peters narrowly won a second term in office,^[184] defeating Republican John James.

James won a Republican Michigan Senate nomination for his second time,^[185] having run against incumbent Democrat Debbie Stabenow in 2018 for Michigan's other senate seat. He faced only token opposition for the 2020 Republican nomination, running against perennial candidate Bob Carr.^[186]

Michigan Democratic primary^[187]

Party		Candidate	Votes	%
	Democratic	Gary Peters (incumbent)	1,180,780	100.00
Total votes			1,180,780	100.00

Michigan Republican primary^[187]

Party		Candidate	Votes	%
	Republican	John E. James	1,005,315	100.00
Total votes			1,005,315	100.00

Michigan general election^[188]

Party		Candidate	Votes	%	±%
	Democratic	Gary Peters (incumbent)	2,734,568	49.90%	–4.71
	Republican	John E. James	2,642,233	48.22%	+6.89
	Constitution	Valerie Willis	50,597	0.92%	–0.28
	Green	Marcia Squier	39,217	0.72%	–0.12
	Natural Law	Doug Dern	13,093	0.24%	N/A
	Write-in		12	0.00%	±0.00
Total votes			5,479,720	100.00%
	Democratic hold

Minnesota

Minnesota election

Nominee Tina Smith Jason Lewis Kevin O'Connor Party Democratic (DFL) Republican Legal Marijuana Now Popular vote 1,566,522 1,398,145 190,154 Percentage 48.74% 43.50% 5.91%

County results Smith:      40–50%      50–60%      60–70% Lewis:      40–50%      50–60%      60–70%

U.S. senator before election Tina Smith Democratic (DFL) Elected U.S. senator Tina Smith Democratic (DFL)

Main article: 2020 United States Senate election in Minnesota

See also: List of United States senators from Minnesota and 2020 United States House of Representatives elections in Minnesota

Incumbent Democrat Tina Smith was appointed to the U.S. Senate to replace Al Franken in 2018 after serving as lieutenant governor, and won a special election later in 2018 to serve the remainder of Franken's term. She defeated Republican Jason Lewis, winning her first full term in office.^[189]

Minnesota Democratic (DFL) primary^[190]

Party		Candidate	Votes	%
	Democratic (DFL)	Tina Smith (incumbent)	497,498	87.14
	Democratic (DFL)	Paula Overby	30,497	5.34
	Democratic (DFL)	Ahmad Hassan	20,037	3.51
	Democratic (DFL)	Steve Carlson	16,429	2.88
	Democratic (DFL)	Christopher Seymore	6,480	1.13
Total votes			570,941	100.00

Minnesota Republican primary^[190]

Party		Candidate	Votes	%
	Republican	Jason Lewis	191,290	78.11
	Republican	Cynthia Gail	17,675	7.22
	Republican	John Berman	16,213	6.62
	Republican	Bob Carney Jr.	10,503	4.29
	Republican	James Reibestein	9,210	3.76
Total votes			244,891	100.00

Minnesota Legal Marijuana Now primary^[190]

Party		Candidate	Votes	%
	Legal Marijuana Now	Kevin O'Connor	6,996	100.00
Total votes			6,996	100.00

Minnesota general election^[191]

Party		Candidate	Votes	%	±%
	Democratic (DFL)	Tina Smith (incumbent)	1,566,522	48.74%	−4.23
	Republican	Jason Lewis	1,398,145	43.50%	+1.15
	Legal Marijuana Now	Kevin O'Connor	190,154	5.91%	+2.21
	Grassroots—LC	Oliver Steinberg	57,174	1.78%	N/A
	Write-in		2,261	0.07%	+0.03
Total votes			3,214,256	100.00%
	Democratic (DFL) hold

Mississippi

Mississippi election

Nominee Cindy Hyde-Smith Mike Espy Party Republican Democratic Popular vote 709,539 578,806 Percentage 54.10% 44.13%

County results Hyde-Smith:      50–60%      60–70%      70–80%      80-90% Espy:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Cindy Hyde-Smith Republican Elected U.S. senator Cindy Hyde-Smith Republican

Main article: 2020 United States Senate election in Mississippi

See also: List of United States senators from Mississippi and 2020 United States House of Representatives elections in Mississippi

Incumbent Republican Cindy Hyde-Smith won her first full term in office, defeating Democrat and former U.S. secretary of agriculture Mike Espy by 10 percentage points.^[192] This race was an exact rematch of the 2018 Mississippi Senate special election, in which Hyde-Smith defeated Espy for the remaining two years of the seat's term.

Libertarian candidate Jimmy Edwards also made the general election ballot.

Mississippi Republican primary^[193]

Party		Candidate	Votes	%
	Republican	Cindy Hyde-Smith (incumbent)	235,463	100.00
Total votes			235,463	100.00

Democratic primary results^[194]

Party		Candidate	Votes	%
	Democratic	Mike Espy	250,496	93.12
	Democratic	Tobey Bartee	11,148	4.14
	Democratic	Jensen Bohren	7,345	2.74
Total votes			268,989	100.00

Mississippi general election^[195]

Party		Candidate	Votes	%	±%
	Republican	Cindy Hyde-Smith (incumbent)	709,539	54.10%	+0.47
	Democratic	Mike Espy	578,806	44.13%	–2.24
	Libertarian	Jimmy Edwards	23,152	1.77%	N/A
Total votes			1,311,497	100.00%
	Republican hold

Montana

Montana election

Nominee Steve Daines Steve Bullock Party Republican Democratic Popular vote 333,174 272,463 Percentage 55.01% 44.99%

County results Daines:      50–60%      60–70%      70–80%      80–90%      >90% Bullock:      50–60%      60–70%      70–80%

U.S. senator before election Steve Daines Republican Elected U.S. senator Steve Daines Republican

Main article: 2020 United States Senate election in Montana

See also: List of United States senators from Montana and 2020 United States House of Representatives election in Montana

Republican Steve Daines won a second term in office, defeating the Democratic nominee, Montana Governor Steve Bullock.^[196]

Daines was opposed (before his nomination) in the Republican primary by hardware store manager Daniel Larson and former Democratic speaker of the Montana House of Representatives John Driscoll, who changed parties in 2020.^[197]

Bullock won the Democratic nomination,^[198] defeating nuclear engineer and U.S. Navy veteran John Mues.^[199]

Libertarian and Green party candidates were set to appear on the general election ballot, but the Libertarians refused to nominate a replacement after their nominee withdrew and the Greens' nominee was disqualified.

Once Bullock filed his candidacy, the race became seen as highly competitive. Bullock, a popular governor and a moderate, led in many polls in the spring and summer of 2020, and raised more money than Daines. Closer to election day, Bullock slightly trailed in polls, but the election was still seen as relatively competitive. Daines defeated Bullock by a larger-than-expected 10-point margin.

Montana Republican primary^[200]

Party		Candidate	Votes	%
	Republican	Steve Daines (incumbent)	192,942	88.02
	Republican	John Driscoll	13,944	6.36
	Republican	Daniel Larson	12,319	5.62
Total votes			219,205	100.00

Montana Democratic primary^[200]

Party		Candidate	Votes	%
	Democratic	Steve Bullock	144,949	95.45
	Democratic	John Mues	3,740	2.46
	Democratic	Mike Knoles (withdrawn)	3,165	2.09
Total votes			151,854	100.00

Montana general election^[201]

Party		Candidate	Votes	%	±%
	Republican	Steve Daines (incumbent)	333,174	55.01%	–2.78
	Democratic	Steve Bullock	272,463	44.99%	+4.92
Total votes			605,637	100.00%
	Republican hold

Nebraska

Nebraska election

Nominee Ben Sasse Chris Janicek Party Republican Democratic Popular vote 583,507 227,191 Percentage 62.7% 24.4%   Nominee Preston Love Jr. Gene Siadek Party Write-In Libertarian Popular vote 58,411 55,115 Percentage 6.3% 5.9%

County results Sasse:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Ben Sasse Republican Elected U.S. Senator Ben Sasse Republican

Main article: 2020 United States Senate election in Nebraska

See also: List of United States senators from Nebraska and 2020 United States House of Representatives elections in Nebraska

Republican Ben Sasse easily won a second term in office, defeating Democrat Chris Janicek by more than 30 percentage points.^[202]

Sasse had defeated businessman and former Lancaster County Republican Party chair Matt Innis in the Republican primary with 75.2% of the vote.

Businessman and 2018 U.S. Senate candidate Chris Janicek won the Democratic primary with 30.7% of the vote, defeating six other candidates.

Libertarian candidate Gene Siadek also appeared on the general election ballot.

After the primary election, the Nebraska Democratic party withdrew its support from Janicek when allegations that he sexually harassed a campaign staffer emerged.^[203] Janicek refused to leave the race despite the state party endorsing his former primary opponent,^{[clarification needed]} which led former Democratic Congressman Brad Ashford to announce a write-in campaign on August 23, 2020.^[204][205] After Janicek vowed to remain in the race anyway, Ashford withdrew on August 27, citing lack of time and resources necessary for a U.S. Senate campaign.^[206] The state Democratic Party subsequently threw its support behind long-time Nebraska activist Preston Love Jr., who declared a write-in candidacy for the seat.^[207][208]

Nebraska Republican primary^[209]

Party		Candidate	Votes	%
	Republican	Ben Sasse (incumbent)	215,207	75.21
	Republican	Matt Innis	70,921	24.79
Total votes			284,212	100.00

Nebraska Democratic primary^[209]

Party		Candidate	Votes	%
	Democratic	Chris Janicek	46,247	30.69
	Democratic	Angie Philips	35,929	23.84
	Democratic	Alisha Shelton	34,284	22.75
	Democratic	Andy Stock	17,156	11.38
	Democratic	Larry Marvin	6,868	4.56
	Democratic	Daniel Wik	5,765	3.83
	Democratic	Dennis Macek	4,453	2.95
Total votes			150,702	100.00

Nebraska general election^[210]

Party		Candidate	Votes	%	±%
	Republican	Ben Sasse (incumbent)	583,507	62.74%	–1.60
	Democratic	Chris Janicek	227,191	24.43%	–7.06
	Write-in	Preston Love Jr.	58,411	6.28%	N/A
	Libertarian	Gene Siadek	55,115	5.93%	N/A
	Write-in		5,788	0.62%	+0.54
Total votes			930,012	100.00%
	Republican hold

New Hampshire

New Hampshire election

Nominee Jeanne Shaheen Corky Messner Party Democratic Republican Popular vote 450,778 326,229 Percentage 56.63% 40.99%

County results Municipality results County results Shaheen:      40–50%      50–60%      60–70%      70–80%      80–90% Messner:      40–50%      50–60%      60–70%

U.S. senator before election Jeanne Shaheen Democratic Elected U.S. senator Jeanne Shaheen Democratic

Main article: 2020 United States Senate election in New Hampshire

See also: List of United States senators from New Hampshire and 2020 United States House of Representatives elections in New Hampshire

Two-term Democrat Jeanne Shaheen won a third term in office by nearly 16 percentage points, defeating Republican Corky Messner.^[211]

Messner defeated U.S. Army brigadier general Donald C. Bolduc and perennial candidate Andy Martin for the Republican nomination,^{[212][213][214]} winning the nomination on September 8.

Libertarian Justin O'Donnell also appeared on the general election ballot.^[215]

New Hampshire Democratic primary^[216]

Party		Candidate	Votes	%
	Democratic	Jeanne Shaheen (incumbent)	142,012	93.88
	Democratic	Paul Krautman	5,914	3.91
	Democratic	Tom Alciere	2,992	1.98
	Write-in		350	0.23
Total votes			151,268	100.00

New Hampshire Republican primary^[217]

Party		Candidate	Votes	%
	Republican	Bryant Messner	69,801	50.26
	Republican	Donald C. Bolduc	58,749	42.30
	Republican	Andy Martin	6,443	4.64
	Republican	Gerard Beloin	3,098	2.23
	Write-in		785	0.57
Total votes			138,876	100.00

New Hampshire general election^[218]

Party		Candidate	Votes	%	±%
	Democratic	Jeanne Shaheen (incumbent)	450,771	56.63%	+5.17
	Republican	Bryant Messner	326,229	40.99%	–7.22
	Libertarian	Justin O'Donnell	18,421	2.32%	N/A
	Write-in		486	0.06%	–0.27
Total votes			795,907	100.00%
	Democratic hold

New Jersey

New Jersey election

Nominee Cory Booker Rik Mehta Party Democratic Republican Popular vote 2,541,178 1,817,052 Percentage 57.23% 40.92%

County results Municipality results Booker:      40–50%      50–60%      60–70%      70–80%      80–90%      >90% Mehta:      40–50%      50–60%      60–70%      70–80%

U.S. senator before election Cory Booker Democratic Elected U.S. senator Cory Booker Democratic

Main article: 2020 United States Senate election in New Jersey

See also: List of United States senators from New Jersey and 2020 United States House of Representatives elections in New Jersey

Democrat Cory Booker won a second full term in office, having first won his seat in a 2013 special election after serving seven years as the mayor of Newark. He defeated Republican Rick Mehta by a margin of more than 16 percentage points.

Booker had sought his party's nomination for President of the United States in 2020. He suspended his presidential campaign on January 13, 2020, and confirmed his intention to seek a second Senate term.^[219]

Attorney Rik Mehta defeated engineer Hirsh Singh, 2018 Independent U.S. Senate candidate Tricia Flanagan, 2018 independent U.S. Senate candidate Natalie Lynn Rivera, and Eugene Anagnos for the Republican nomination.

Green Party candidate Madelyn Hoffman and two independent candidates also appeared on the general election ballot.

New Jersey has not elected a Republican senator since 1972, and all pundits expected Booker to be easily re-elected.^[220]

New Jersey Democratic primary^[221]

Party		Candidate	Votes	%
	Democratic	Cory Booker (incumbent)	838,110	87.58
	Democratic	Lawrence Hamm	118,802	12.42
Total votes			956,912	100.00

New Jersey Republican primary^[221]

Party		Candidate	Votes	%
	Republican	Rik Mehta	154,817	38.01
	Republican	Hirsh Singh	146,133	35.88
	Republican	Tricia Flanagan	72,678	17.84
	Republican	Natalie Lynn Rivera	21,650	5.31
	Republican	Eugene Anagnos	12,047	2.96
Total votes			407,325	100.00

New Jersey general election^[222]

Party		Candidate	Votes	%	±%
	Democratic	Cory Booker (incumbent)	2,541,178	57.23%	+1.39
	Republican	Rikin Mehta	1,817,052	40.92%	–1.41
	Green	Madelyn Hoffman	38,288	0.86%	N/A
	Independent	Veronica Fernandez	32,290	0.73%	N/A
	Independent	Daniel Burke	11,632	0.26%	N/A
Total votes			4,440,440	100.00%
	Democratic hold

New Mexico

New Mexico election

Nominee Ben Ray Luján Mark Ronchetti Party Democratic Republican Popular vote 474,483 418,483 Percentage 51.73% 45.62%

County results Luján:      40–50%      50–60%      60–70%      70–80% Ronchetti:      50–60%      60–70%      70–80%

U.S. senator before election Tom Udall Democratic Elected U.S. senator Ben Ray Luján Democratic

Main article: 2020 United States Senate election in New Mexico

See also: List of United States senators from New Mexico and 2020 United States House of Representatives elections in New Mexico

Two-term Democrat Tom Udall was the only incumbent Democratic U.S. senator retiring in 2020.^[223] Democratic U.S. representative Ben Ray Luján^[224] defeated Republican Mark Ronchetti by 6 percentage points.

Luján won the Democratic nomination without serious opposition.

Ronchetti, the former KRQE chief meteorologist, defeated former U.S. Interior Department official Gavin Clarkson and executive director for the New Mexico Alliance for Life Elisa Martinez in the primary.^{[225][226][227]}

Libertarian Bob Walsh also appeared on the general election ballot.^{[citation needed]}

New Mexico Democratic primary^[228]

Party		Candidate	Votes	%
	Democratic	Ben Ray Luján	225,082	100.00
Total votes			225,082	100.00

New Mexico Republican primary^[228]

Party		Candidate	Votes	%
	Republican	Mark Ronchetti	89,216	56.49
	Republican	Elisa Martinez	41,240	26.11
	Republican	Gavin Clarkson	27,471	17.39
Total votes			157,927	100.00

New Mexico general election^[229]

Party		Candidate	Votes	%	±%
	Democratic	Ben Ray Luján	474,483	51.73%	–3.83
	Republican	Mark Ronchetti	418,483	45.62%	+1.18
	Libertarian	Bob Walsh	24,271	2.65%	N/A
Total votes			917,237	100.00%
	Democratic hold

North Carolina

North Carolina election

Nominee Thom Tillis Cal Cunningham Party Republican Democratic Popular vote 2,665,598 2,569,965 Percentage 48.69% 46.94%

County results Tillis:      40–50%      50–60%      60–70%      70–80% Cunningham:      40–50%      50–60%      60–70%      70–80%

U.S. senator before election Thom Tillis Republican Elected U.S. senator Thom Tillis Republican

Main article: 2020 United States Senate election in North Carolina

See also: List of United States senators from North Carolina and 2020 United States House of Representatives elections in North Carolina

Republican Thom Tillis won a second term in office, defeating Democratic former state senator Cal Cunningham.

Cunningham defeated state senator Erica D. Smith and Mecklenburg County commissioner Trevor Fuller for the Democratic nomination. Tillis defeated three opponents.^[230]

The Libertarian Party and the Constitution Party had candidates on the general election ballot.

Despite having grown unpopular among both centrist and conservative Republicans due to his inconsistent support of Trump, and trailing narrowly in polls for almost the entire cycle,^[231] Tillis won re-election by nearly 2 points.^[232]

North Carolina Republican primary^[233]

Party		Candidate	Votes	%
	Republican	Thom Tillis (incumbent)	608,943	78.08
	Republican	Paul Wright	58,908	7.55
	Republican	Larry Holmquist	57,356	7.35
	Republican	Sharon Y. Hudson	54,651	7.01
Total votes			779,858	100.00

North Carolina Democratic primary^[233]

Party		Candidate	Votes	%
	Democratic	Cal Cunningham	717,941	56.93
	Democratic	Erica D. Smith	438,969	34.81
	Democratic	Trevor M. Fuller	48,168	3.82
	Democratic	Steve Swenson	33,741	2.68
	Democratic	Atul Goel	22,226	1.76
Total votes			1,261,045	100.00

North Carolina general election^[234]

Party		Candidate	Votes	%	±%
	Republican	Thom Tillis (incumbent)	2,665,598	48.69%	–0.13
	Democratic	Cal Cunningham	2,569,965	46.94%	–0.32
	Libertarian	Shannon Bray	171,571	3.13%	–0.61
	Constitution	Kevin E. Hayes	67,818	1.24%	N/A
Total votes			5,474,952	100.00%
	Republican hold

Oklahoma

Oklahoma election

Nominee Jim Inhofe Abby Broyles Party Republican Democratic Popular vote 979,140 509,763 Percentage 62.91% 32.75%

County results Inhofe:      40–50%      50–60%      60–70%      70–80%      80–90%      >90%

U.S. senator before election Jim Inhofe Republican Elected U.S. senator Jim Inhofe Republican

Main article: 2020 United States Senate election in Oklahoma

See also: List of United States senators from Oklahoma and 2020 United States House of Representatives elections in Oklahoma

Republican Jim Inhofe easily won a fifth term in office, defeating Democrat Abby Broyles by more than 30 percentage points.

Inhofe defeated J.J. Stitt, a farmer and gun shop owner, and Neil Mavis, a former Libertarian Party candidate, for the Republican nomination.^[235]

Broyles, an attorney, defeated perennial candidate Sheila Bilyeu and 2018 5th congressional district candidate Elysabeth Britt for the Democratic nomination.

Libertarian candidate Robert Murphy and two Independents also appeared on the general election ballot.

Oklahoma is one of the most solidly Republican states^[22] and Inhofe won in a landslide.

Oklahoma Republican primary^[236]

Party		Candidate	Votes	%
	Republican	Jim Inhofe (incumbent)	277,868	74.05
	Republican	J.J. Stitt	57,433	15.31
	Republican	John Tompkins	23,563	6.28
	Republican	Neil Mavis	16,363	4.36
Total votes			375,227	100.00

Oklahoma Democratic primary^[236]

Party		Candidate	Votes	%
	Democratic	Abby Broyles	163,921	60.45
	Democratic	Elysabeth Britt	45,206	16.67
	Democratic	Sheila Bilyeu	32,350	11.93
	Democratic	R. O. Joe Cassity, Jr.	29,698	10.95
Total votes			271,175	100.00

Oklahoma general election^[237]

Party		Candidate	Votes	%	±%
	Republican	Jim Inhofe (incumbent)	979,140	62.91%	–5.10
	Democratic	Abby Broyles	509,763	32.75%	+4.20
	Libertarian	Robert Murphy	34,435	2.21%	N/A
	Independent	Joan Farr	21,652	1.39%	+0.11
	Independent	A. D. Nesbit	11,371	0.73%	N/A
Total votes			1,556,361	100.00%
	Republican hold

Oregon

Oregon election

Nominee Jeff Merkley Jo Rae Perkins Party Democratic Republican Popular vote 1,321,047 912,814 Percentage 56.91% 39.32%

County results Merkley:      40-50%      50-60%      60-70%      70-80% Perkins:      40-50%      50-60%      60-70%      70-80%

U.S. senator before election Jeff Merkley Democratic Elected U.S. senator Jeff Merkley Democratic

Main article: 2020 United States Senate election in Oregon

See also: List of United States senators from Oregon and 2020 United States House of Representatives elections in Oregon

Democrat Jeff Merkley won a third term in office, defeating Republican Jo Rae Perkins by more than 17 percentage points. Merkley also received the Oregon Independent Party and the Working Families Party nominations.^[238]

Perkins, a 2014 U.S. Senate and 2018 U.S. House candidate, defeated three other candidates in the Republican primary with 49.29% of the vote. She is a supporter of QAnon.^[239]

Ibrahim Taher was also on the general election ballot, representing the Pacific Green Party^[240] and the Oregon Progressive Party. Gary Dye represented the Libertarian Party.^[238]

Oregon Democratic primary^[241]

Party		Candidate	Votes	%
	Democratic	Jeff Merkley (incumbent)	564,878	98.71
	Write-in		7,386	1.29
Total votes			572,264	100.00

Oregon Republican primary^[241]

Party		Candidate	Votes	%
	Republican	Jo Rae Perkins	178,004	49.23
	Republican	Paul J. Romero Jr.	109,783	30.36
	Republican	Robert Schwartz	40,196	11.12
	Republican	John Verbeek	29,382	8.13
	Write-in		4,250	1.17
Total votes			361,615	100.00

Oregon general election^[242]

Party		Candidate	Votes	%	±%
	Democratic	Jeff Merkley (incumbent)	1,321,047	56.91%	+1.18
	Republican	Jo Rae Perkins	912,814	39.32%	+2.45
	Libertarian	Gary Dye	42,747	1.84%	–1.23
	Pacific Green	Ibrahim Taher	42,239	1.82%	–0.40
	Write-in		2,402	0.11%	–0.34
Total votes			2,321,249	100.00%
	Democratic hold

Rhode Island

Rhode Island election

Nominee Jack Reed Allen Waters Party Democratic Republican Popular vote 328,574 164,855 Percentage 66.48% 33.35%

County results Municipality results County results Reed:      50–60%      60–70%      70–80%      80–90% Waters:      50–60%

U.S. senator before election Jack Reed Democratic Elected U.S. senator Jack Reed Democratic

Main article: 2020 United States Senate election in Rhode Island

See also: List of United States senators from Rhode Island and 2020 United States House of Representatives elections in Rhode Island

Democrat Jack Reed won a fifth term in office, defeating Republican Allen Waters by more than 33 percentage points.

Both Reed and Waters ran unopposed for their respective nominations.

Rhode Island Democratic primary^[243]

Party		Candidate	Votes	%
	Democratic	Jack Reed (incumbent)	65,859	100.00
Total votes			65,859	100.00

Rhode Island Republican primary^[243]

Party		Candidate	Votes	%
	Republican	Allen Waters	8,819	100.00
Total votes			8,819	100.00

Rhode Island general election^[244]

Party		Candidate	Votes	%	±%
	Democratic	Jack Reed (incumbent)	328,574	66.48%	–4.10
	Republican	Allen Waters	164,855	33.35%	+4.10
	Write-in		833	0.17%	±0.00
Total votes			494,262	100.00%
	Democratic hold

South Carolina

South Carolina election

Nominee Lindsey Graham Jaime Harrison Party Republican Democratic Popular vote 1,369,137 1,110,828 Percentage 54.44% 44.17%

County results Graham:      40–50%      50–60%      60–70%      70–80% Harrison:      50–60%      60–70%      70–80%

U.S. senator before election Lindsey Graham Republican Elected U.S. senator Lindsey Graham Republican

Main article: 2020 United States Senate election in South Carolina

See also: List of United States senators from South Carolina and 2020 United States House of Representatives elections in South Carolina

Three-term Republican Lindsey Graham won a fourth term in office, defeating Democrat Jaime Harrison by over ten percentage points in a highly publicized race.

Graham defeated three opponents in the June 9 Republican primary.^[245]

After his primary opponents dropped out, former South Carolina Democratic Party chairman Jaime Harrison was unopposed for the Democratic nomination.

Bill Bledsoe won the Constitution Party nomination. On October 1, 2020, Bledsoe dropped out of the race and endorsed Graham, but remained on the ballot as required by state law.^[246]

Despite the significant Republican lean of the state as a whole, polls indicated that the Senate election was competitive, with summer polling ranging from a tie to a modest advantage for Graham.^[247][248] Graham's popularity had declined as a result of his close embrace of Trump, reversing his outspoken criticism of Trump in the 2016 campaign.^[249][250]

Graham's victory was by a much larger margin than expected,^[251] as part of a broader pattern of Republicans overperforming polls in 2020.

South Carolina Republican primary^[252]

Party		Candidate	Votes	%
	Republican	Lindsey Graham (incumbent)	317,512	67.69
	Republican	Michael LaPierre	79,932	17.04
	Republican	Joe Reynolds	43,029	9.17
	Republican	Dwayne Buckner	28,570	6.09
Total votes			469,043	100.00

South Carolina general election^[253]

Party		Candidate	Votes	%	±%
	Republican	Lindsey Graham (incumbent)	1,369,137	54.44%	+0.17
	Democratic	Jaime Harrison	1,110,828	44.17%	+5.39
	Constitution	Bill Bledsoe	32,845	1.30%	N/A
	Write-in		2,294	0.09%	–0.29
Total votes			2,515,104	100.00%
	Republican hold

South Dakota

South Dakota election

Nominee Mike Rounds Dan Ahlers Party Republican Democratic Popular vote 276,232 143,987 Percentage 65.74% 34.26%

County results Rounds:      50–60%      60–70%      70–80%      80–90%      >90% Ahlers:      50–60%      70–80%      80–90%

U.S. senator before election Mike Rounds Republican Elected U.S. senator Mike Rounds Republican

Main article: 2020 United States Senate election in South Dakota

See also: List of United States senators from South Dakota and 2020 United States House of Representatives election in South Dakota

Republican Mike Rounds, former governor of South Dakota, won a second term in office, defeating Democrat Dan Ahlers.

Rounds faced a primary challenge from state representative Scyller Borglum.^[254]

Ahlers, a South Dakota state representative, ran unopposed in the Democratic primary.^[255]

One independent candidate, Clayton Walker, filed but failed to qualify for the ballot.^[256]

South Dakota Republican primary^[257]

Party		Candidate	Votes	%
	Republican	Mike Rounds (incumbent)	70,365	75.23
	Republican	Scyller Borglum	23,164	24.77
Total votes			93,529	100.00

South Dakota general election^[258]

Party		Candidate	Votes	%	±%
	Republican	Mike Rounds (incumbent)	276,232	65.74%	+15.37
	Democratic	Daniel Ahlers	143,987	34.26%	+4.75
Total votes			420,219	100.00%
	Republican hold

Tennessee

Tennessee election

Nominee Bill Hagerty Marquita Bradshaw Party Republican Democratic Popular vote 1,840,926 1,040,691 Percentage 62.20% 35.16%

County results Hagerty:      50–60%      60–70%      70–80%      80–90% Bradshaw:      50–60%      60–70%

U.S. senator before election Lamar Alexander Republican Elected U.S. senator Bill Hagerty Republican

Main article: 2020 United States Senate election in Tennessee

See also: List of United States senators from Tennessee and 2020 United States House of Representatives elections in Tennessee

Three-term Republican Lamar Alexander was re-elected in 2014. He announced in December 2018 that he would not seek a fourth term.^[259]

Assisted by an endorsement from Trump,^[260] former ambassador to Japan Bill Hagerty won the Republican nomination^[261] and the seat.

Hagerty defeated orthopedic surgeon Manny Sethi^[262] and 13 others in the Republican primary.

Environmental activist Marquita Bradshaw of Memphis defeated James Mackler, an Iraq War veteran and Nashville attorney,^[263] in the Democratic primary, a major upset.

Nine independent candidates also appeared on the general election ballot.

Hagerty easily defeated Bradshaw.

Tennessee Republican primary^[264]

Party		Candidate	Votes	%
	Republican	Bill Hagerty	331,267	50.75
	Republican	Manny Sethi	257,223	39.41
	Republican	George Flinn, Jr.	22,454	3.44
	Republican	Jon Henry	8,104	1.24
	Republican	Natisha Brooks	8,072	1.24
	Republican	Byron Bush	5,420	0.83
	Republican	Clifford Adkins	5,316	0.81
	Republican	Terry Dicus	2,279	0.35
	Republican	Tom Emerson, Jr.	2,252	0.35
	Republican	David Schuster	2,045	0.31
	Republican	John Osborne	1,877	0.29
	Republican	Roy Dale Cope	1,791	0.27
	Republican	Kent Morrell	1,769	0.27
	Republican	Aaron Pettigrew	1,622	0.25
	Republican	Glen Neal, Jr.	1,233	0.19
Total votes			652,724	100.00

Tennessee Democratic primary^[265]

Party		Candidate	Votes	%
	Democratic	Marquita Bradshaw	117,962	35.51
	Democratic	Robin Kimbrough Hayes	88,492	26.64
	Democratic	James Mackler	78,966	23.77
	Democratic	Gary G. Davis	30,758	9.26
	Democratic	Mark Pickrell	16,045	4.83
Total votes			332,223	100.00

Tennessee general election^[266]

Party		Candidate	Votes	%	±%
	Republican	Bill Hagerty	1,840,926	62.20%	+0.33
	Democratic	Marquita Bradshaw	1,040,691	35.16%	+3.29
	Independent	Elizabeth McLeod	16,652	0.56%	N/A
	Independent	Yomi Faparusi	10,727	0.36%	N/A
	Independent	Stephen Hooper	9,609	0.32%	N/A
	Independent	Kacey Morgan (withdrawn)	9,598	0.32%	N/A
	Independent	Ronnie Henley	8,478	0.30%	N/A
	Independent	Aaron James	7,203	0.29%	N/A
	Independent	Eric William Stansberry	6,781	0.23%	N/A
	Independent	Dean Hill	4,872	0.16%	N/A
	Independent	Jeffrey Grunau	4,160	0.14%	N/A
	Write-in		64	0.00%	±0.00
Total votes			2,959,761	100.00%
	Republican hold

Texas

Texas election

Nominee John Cornyn MJ Hegar Party Republican Democratic Popular vote 5,962,983 4,888,764 Percentage 53.51% 43.87%

County results Cornyn:      50–60%      60–70%      70–80%      80–90%      >90% Hegar:      40–50%      50–60%      60–70%

U.S. senator before election John Cornyn Republican Elected U.S. senator John Cornyn Republican

Main article: 2020 United States Senate election in Texas

See also: List of United States senators from Texas and 2020 United States House of Representatives elections in Texas

Republican John Cornyn won a fourth^[267] term in office, defeating Democrat MJ Hegar by a little less than ten percentage points.

Cornyn defeated four other candidates in the Republican primary, with 76.04% of the vote.

Hegar, an Air Force combat veteran and the 2018 Democratic nominee for Texas's 31st congressional district,^[268] defeated runner-up state senator Royce West and 11 other candidates in the Democratic primary. Hegar and West advanced to a primary run-off election on July 14 to decide the nomination, and Hegar prevailed.

The Green and Libertarian Parties also appeared on the general election ballot. Candidates from the Human Rights Party and the People over Politics Party and three independents failed to qualify.

Statewide races in Texas have been growing more competitive in recent years, and polling in August/September showed Cornyn with a lead of 4–10 points over Hegar, with a significant fraction of the electorate still undecided.^[269][270] Cornyn's victory was at the higher end of the polling spectrum.

Texas Republican primary^[271]

Party		Candidate	Votes	%
	Republican	John Cornyn (incumbent)	1,470,669	76.04
	Republican	Dwayne Stovall	231,104	11.95
	Republican	Mark Yancey	124,864	6.46
	Republican	John Anthony Castro	86,916	4.49
	Republican	Virgil Bierschwale	20,494	1.06
Total votes			1,934,047	100.00

Texas Democratic primary^[271]

Party		Candidate	Votes	%
	Democratic	MJ Hegar	417,160	22.31
	Democratic	Royce West	274,074	14.66
	Democratic	Cristina Tzintzún Ramirez	246,659	13.19
	Democratic	Annie Garcia	191,900	10.27
	Democratic	Amanda Edwards	189,624	10.14
	Democratic	Chris Bell	159,751	8.55
	Democratic	Sema Hernandez	137,892	7.38
	Democratic	Michael Cooper	92,463	4.95
	Democratic	Victor Hugo Harris	59,710	3.19
	Democratic	Adrian Ocegueda	41,566	2.22
	Democratic	Jack Daniel Foster Jr.	31,718	1.70
	Democratic	D. R. Hunter	26,902	1.44
Total votes			1,869,419	100.00

Texas Democratic primary runoff^[271]

Party		Candidate	Votes	%
	Democratic	MJ Hegar	502,516	52.24
	Democratic	Royce West	459,457	47.76
Total votes			961,973	100.00

Texas general election^[272]

Party		Candidate	Votes	%	±%
	Republican	John Cornyn (incumbent)	5,962,983	53.51%	–8.05
	Democratic	MJ Hegar	4,888,764	43.87%	+9.51
	Libertarian	Kerry McKennon	209,722	1.88%	–1.00
	Green	David Collins	81,893	0.73%	–0.45
	Write-in	Ricardo Turullols-Bonilla	678	0.01%	N/A
Total votes			11,144,040	100.00%
	Republican hold

Virginia

Virginia election

Nominee Mark Warner Daniel Gade Party Democratic Republican Popular vote 2,466,500 1,934,199 Percentage 55.99% 43.91%

County results Warner:      50–60%      60–70%      70–80%      80–90% Gade:      50–60%      60–70%      70–80%

U.S. senator before election Mark Warner Democratic Elected U.S. senator Mark Warner Democratic

Main article: 2020 United States Senate election in Virginia

See also: List of United States senators from Virginia and 2020 United States House of Representatives elections in Virginia

Democrat Mark Warner won a third term in office, defeating Republican Daniel Gade.

Warner ran unopposed in the Democratic primary.^[273]

Gade, a professor and U.S. Army veteran,^[274] defeated teacher Alissa Baldwin^[275] and U.S. Army veteran and intelligence officer Thomas Speciale^[276] in the Republican primary.

Virginia Republican primary^[277]

Party		Candidate	Votes	%
	Republican	Daniel Gade	208,754	67.40
	Republican	Alissa Baldwin	56,165	18.13
	Republican	Thomas Speciale	44,795	14.46
Total votes			309,714	100.00

Virginia general election^[278]

Party		Candidate	Votes	%	±%
	Democratic	Mark Warner (incumbent)	2,466,500	55.99%	+6.84
	Republican	Daniel Gade	1,934,199	43.91%	–4.43
	Write-in		4,388	0.10%	+0.02
Total votes			4,405,087	100.00%
	Democratic hold

West Virginia

West Virginia election

Nominee Shelley Moore Capito Paula Jean Swearengin Party Republican Democratic Popular vote 547,454 210,309 Percentage 70.28% 27.00%

County results Capito:      50–60%      60–70%      70–80%      80–90%

U.S. senator before election Shelley Moore Capito Republican Elected U.S. senator Shelley Moore Capito Republican

Main article: 2020 United States Senate election in West Virginia

See also: List of United States senators from West Virginia and 2020 United States House of Representatives elections in West Virginia

Republican Shelley Moore Capito was re-elected to a second term in a landslide, defeating Democrat Paula Jean Swearengin by 43 points.

Capito was unsuccessfully challenged in the Republican primary by farmer Larry Butcher and Allen Whitt, president of the West Virginia Family Policy Council.^[279]

Swearengin, an environmental activist and unsuccessful candidate for Senate in 2018,^[280] won the Democratic primary, defeating former mayor of South Charleston Richie Robb and former state senator Richard Ojeda, who previously ran for Congress and, briefly, president in 2020.

Libertarian candidate David Moran also appeared on the general election ballot.

West Virginia Republican primary^[281]

Party		Candidate	Votes	%
	Republican	Shelley Moore Capito (incumbent)	173,847	83.32
	Republican	Allen Whitt	20,075	9.62
	Republican	Larry Butcher	14,717	7.05
Total votes			208,639	100.00

West Virginia Democratic primary^[282]

Party		Candidate	Votes	%
	Democratic	Paula Jean Swearengin	72,292	38.39
	Democratic	Richard Ojeda	61,954	32.90
	Democratic	Richie Robb	54,048	28.70
Total votes			188,294	100.00

West Virginia general election^[283]

Party		Candidate	Votes	%	±%
	Republican	Shelley Moore Capito (incumbent)	547,454	70.28%	+8.16
	Democratic	Paula Jean Swearengin	210,309	27.00%	–7.47
	Libertarian	David Moran	21,155	2.72%	+1.09
Total votes			778,918	100.00%
	Republican hold

Wyoming

Wyoming election

Nominee Cynthia Lummis Merav Ben-David Party Republican Democratic Popular vote 198,100 72,766 Percentage 72.85% 26.76%

County results Lummis:      50–60%      60–70%      70–80%      80–90%      >90% Ben-David:      60–70%

U.S. senator before election Mike Enzi Republican Elected U.S. senator Cynthia Lummis Republican

Main article: 2020 United States Senate election in Wyoming

See also: List of United States senators from Wyoming and 2020 United States House of Representatives election in Wyoming

Four-term Republican Mike Enzi announced in May 2019 that he would retire. Republican nominee Cynthia Lummis defeated Democratic nominee Merav Ben-David by more than 46 percentage points.

Lummis won the Republican nomination in a field of nine candidates.^[284]

Ben-David, the chair of the Department of Zoology and Physiology at the University of Wyoming, defeated community activists Yana Ludwig and James Debrine, think-tank executive Nathan Wendt, and perennial candidates Rex Wilde and Kenneth R. Casner for the Democratic nomination.

Wyoming Republican primary^[285]

Party		Candidate	Votes	%
	Republican	Cynthia Lummis	63,511	59.67
	Republican	Robert Short	13,473	12.66
	Republican	Bryan Miller	10,946	10.28
	Republican	Donna Rice	5,881	5.53
	Republican	R. Mark Armstrong	3,904	3.67
	Republican	Joshua Wheeler	3,763	3.53
	Republican	John Holtz	1,820	1.71
	Republican	Devon Cade	1,027	0.96
	Republican	Michael Kemler	985	0.93
	Republican	Star Roselli	627	0.59
	Write-in		501	0.47
Total votes			106,438	100.00

Wyoming Democratic primary^[285]

Party		Candidate	Votes	%
	Democratic	Merav Ben-David	9,584	40.28
	Democratic	Yana Ludwig	4,931	20.73
	Democratic	Nathan Wendt	4,212	17.70
	Democratic	Kenneth Casner	2,139	8.99
	Democratic	Rex Wilde	1,888	7.93
	Democratic	James DeBrine	865	3.64
	Write-in		173	0.73
Total votes			23,792	100.00

Wyoming general election^[286]

Party		Candidate	Votes	%	±%
	Republican	Cynthia Lummis	198,100	72.85%	+0.66
	Democratic	Merav Ben-David	72,766	26.76%	+9.31
	Write-in		1,071	0.39%	+0.11
Total votes			271,937	100.00%
	Republican hold

See also

• 2020 United States elections
• 2020 United States House of Representatives elections
  • List of new members of the 117th United States Congress
• 2020 United States presidential election
• 2020 United States gubernatorial elections
• 2020 United States Shadow Senator election in the District of Columbia

Notes

1. Majority control in an evenly divided Senate is determined by the vice president, who has the power to break tied votes in their constitutional capacity as president of the Senate. Accordingly, Senate control requires 51 seats without control of the vice presidency or 50 seats with control of the vice presidency.
2. The Democratic caucus, which also includes independent senators Angus King and Bernie Sanders, totaled 50 following these elections.
3. Although these elections yielded a 50–50 tie between the Democratic and Republican caucuses, Democrats took the majority due to their concurrent victory in the presidential election, with Vice President Kamala Harris empowered to act as tie-breaker.
4. For the two Georgia races, only the runoff results are counted.
5. Both independent senators — Angus King and Bernie Sanders — have caucused with the Democratic Party since joining the Senate.
6. Total of official results for candidates labeled "independent".
7. McConnell briefly remained majority leader between January 3, when the 117th Congress was formally convened, and January 20, 2021, when Jon Ossoff and Raphael Warnock were sworn in as the 49th and 50th members of the Democratic caucus and Kamala Harris was inaugurated as vice president, thereby giving Democrats majority status in her capacity as tie-breaker.
8. Appointee defeated
9. The last elections for this group of senators were in 2014, except for those elected in a special election or who were appointed after the resignation or passing of a sitting senator, as noted.
10. FiveThirtyEight has three separate models for their House and Senate ratings: Lite (polling data only), Classic (polls, fundraising, and past voting patterns), and Deluxe (Classic alongside experts' ratings). This table uses the Deluxe model.
11. Category ranges:
    • Tossup: <60% both candidates
    • Lean: ≥60%
    • Likely: ≥75%
    • Solid: ≥95%
12. Republican Jeff Sessions ran uncontested in 2014 and won with 97.3% of the vote but resigned on February 8, 2017, to become United States Attorney General.
13. Republican John McCain won in 2016 with 53.7% of the vote but died on August 25, 2018.
14. This race was decided in a run-off on January 5, 2021, after no candidate reached 50% of the vote on November 3.
15. Republican Johnny Isakson won with 54.8% of the vote in 2016 but resigned on December 31, 2019, due to declining health.
16. Democrat Al Franken won with 53.2% of the vote in 2014 but resigned on January 2, 2018.
17. Republican Thad Cochran won with 59.9% of the vote in 2014 but resigned on April 1, 2018, due to declining health.
18. Democratic total includes two tndependents who caucus with the Democrats.
19. The predictor puts the Vice President for the Democrats, giving them control of the Senate in their ratings with only 50 seats.
20. If no filing is required prior to the primary, the primary's date is listed.
21. If no filing is required prior to the general election, the election's date is listed.
22. The following morning.
23. If no candidate wins a majority of the vote in the general election on November 3, 2020, the top two candidates will go to run-off on January 5, 2021.
24. If no candidate wins a majority of the vote in the "jungle primary" on November 3, 2020, the top two candidates will go to run-off.
25. Eligible up to August 4, 2020, only if no non-write-in candidates file for a primary.
26. Eligible up to March 10, 2020, only if a candidate whose name is still on the ballot has died, resigned or withdrawn from the race.
27. Eligible up to November 3, 2020, only if a candidate whose name is still on the ballot ha died, resigned or withdrawn from the race.
28. Initial declaration of intent's deadline for unaffiliated candidates is December 9, 2019.
29. Write-in candidates must be registered members of a party by this date to be nominated in its primary but do not need to file a declaration of candidacy beforehand.
30. Georgia was the "tipping-point state".
31. Gross ran as an independent with the nomination of the Democratic Party.
32. Maine uses ranked-choice voting; results shown are first-choice votes.

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Further reading

• Amber Phillips (October 17, 2020), "The 5 types of attack ads defining the 2020 congressional elections", The Washington Post