Name(s)
|
Variations
|
Type of representation
|
Mixed?
|
Single/multi-winner
|
List / candidate-based system
|
Type of decision rule
|
Type of ballot
|
Number of votes / voter
|
Number of tiers
(if mixed)
|
First-past-the-post (FPTP/FPP)[1]
Single-member plurality (SMP/SMDP)
|
two-round system with lower than 50% requirement in first round
|
majoritarian
|
No
|
single-winner
|
candidate
|
plurality
|
single choice
|
1
|
—
|
General ticket
Party-block voting (PBV)
|
|
majoritarian
|
No
|
multi-winner
|
list
|
plurality
|
single choice
|
1
|
—
|
Plurality block voting (BV)
plurality-at-large voting
(multiple non-transferable vote, MTNV)
|
limited party block voting
|
majoritarian
|
No
|
multi-winner
|
candidate
|
plurality
|
multiple choice
|
=number of winners
|
—
|
Limited voting (LV)
limited block voting
partial block voting
(multiple non-transferable vote, MNTV)
|
limited party block voting
|
semi-proportional
|
No
|
multi-winner
|
candidate
|
plurality
|
multiple choice
|
<number of winners
|
—
|
Single non-transferable vote (SNTV)
|
|
semi-proportional
|
No
|
multi-winner
|
candidate
|
plurality
|
single choice
|
1
|
—
|
Single transferable vote (STV)
Hare–Clark electoral system[2]
(proportional ranked-choice voting)[3]
|
|
semi-proportional / proportional
|
No
|
multi-winner
|
candidate
|
quota
|
ranked choice (ordinal voting)
|
1 (effectively)
|
—
|
Instant-runoff voting (IRV)[4]
(Alternative vote - AV)[5]
(Ranked-choice voting - RCV)[6]
(Single-transferable vote - STV)
(Hare's method)[7]
|
contingent vote,
supplementary vote,
Coombs' method
|
majoritarian
|
No
|
single-winner
|
candidate
|
majority
|
ranked choice (ordinal voting)
|
1 (effectively)
|
—
|
Two-round system (TRS)[8]
Runoff voting
|
Non-partisan primary,
multi-round voting
|
majoritarian
|
No
|
single-winner
|
candidate
|
majority
|
single choice
|
1 (each round)
|
—
|
Two-round block voting
(majority block voting)(multiple non-transferable vote, MNTV)
|
|
majoritarian
|
No
|
multi-winner
|
candidate
|
majority
|
multiple choice
|
=number of winners (each round)
|
—
|
Multiple transferable vote (MTV)
(Preferential block voting)
|
|
majoritarian
|
No
|
multi-winner
|
candidate
|
majority
|
ranked choice (ordinal voting)
|
=number of winners, effectively
|
—
|
Exhaustive ballot
|
|
majoritarian
|
No
|
single-winner /multi-winner
|
candidate
|
majority
|
single choice
|
1
|
—
|
Cumulative voting
|
panachage (certain types)
|
majoritarian / semi-proportional
|
No
|
single-winner /multi-winner
|
candidate
|
plurality
|
cumulative ballot
|
>1
|
—
|
Approval voting (AV)[9]
|
block approval voting
|
majoritarian
|
No
|
single-winner /multi-winner
|
candidate
|
plurality
|
multiple choice
|
any number
(max. one for one candidate)
|
—
|
Score voting Range voting
|
Approval voting (score voting 0-1)
|
majoritarian / semi-proportional
|
No
|
single-winner /multi-winner
|
candidate
|
plurality
|
score ballot(cardinal voting)
|
|
—
|
Borda count
|
|
majoritarian / semi-proportional
|
No
|
single-winner /multi-winner
|
candidate
|
plurality
|
ranked choice (ordinal voting)
|
|
—
|
Condorcet method
|
Copeland's method,
Dodgson's method,
Kemeny–Young method,
Minimax,
Nanson's method,
ranked pairs,
Schulze method,
Tideman's alternative methods
|
majoritarian
|
No
|
single-winner
|
candidate
|
majority against every candidate
|
ranked choice (ordinal voting)
|
|
—
|
Party-list proportional representation
list-PR
|
Largest remainderHighest averagesBinomial voting
|
semi-proportional / proportional
|
No
|
multi-winner
|
list (+ candidate, if open list)
|
quota or divisor method
|
single choice
|
1 (effectively)
|
—
|
Superposition - non-compensatory combination of FPTP + List-PR
(Supplementary member system)
(Parallel voting)[10]
(Mixed-member majoritarian representation - MMM)
|
Two-round system + List-PR
mixed single vote version
|
semi-proportional
|
Yes
|
multi-winner(+ single-winner in districts)
|
candidate + list
|
mixed non-compensatory
|
single choice
|
2 (each tier)
|
2
|
Seat-linkage compensatory combination of FPTP + List-PR
(Additional member system - AMS)[11]
(Mixed-member proportional representation - MMP)
|
mixed single vote versionbest-loser mixed-member proportional
|
semi-proportional / proportional
|
Yes
|
multi-winner(+ single-winner in districts)
|
candidate + list
|
mixed compensatory
|
single choice
|
2 (each tier)
|
2
|
Vote-linkage compensatory combination of FPTP + List-PR
Positive vote transfer system (PVT)[12]
(mixed single vote - MSV[13])
(Additional member system - AMS)
|
negative vote transfer
|
semi-proportional / proportional
|
Yes
|
multi-winner(+ single-winner in districts)
|
candidate + list
|
mixed compensatory
|
single choice
|
1
|
2
|
Dual member proportional (DMP)[14]
|
|
semi-proportional / proportional
|
Yes
|
multi-winner
|
list or candidate
|
plurality
|
single choice
|
1
|
1
|