The 2004 United States House of Representatives elections were held on November 2, 2004, to elect all 435 seats of the chamber. It coincided with the re-election of President George W. Bush as well as many Senate elections and gubernatorial elections. Prior to the election in the 108th Congress, Republicans held 227 seats, Democrats held 205, with two Republican vacancies and one independent. As a result of this election, the 109th Congress began composed of 232 Republicans, 201 Democrats, one independent (who caucuses with the Democrats), and one vacancy (Democrat Bob Matsui won reelection, but died just two days before the beginning of the 109th Congress.).
Democrats won open seats in Colorado, South Dakota, and New York while ousting incumbents in Georgia and Illinois. Republicans won an open seat in Kentucky while ousting an incumbent in Indiana. They gained five seats in Texas after a controversial mid-decade redistricting placed several rural Democratic incumbents into new districts. Two seats in Louisiana swapped party control.
As of 2022[update], this is the last election in which someone who was not from the Democratic or Republican party was elected to the House (Independent Bernie Sanders). Republicans would not make consecutive net gains in the House (after gaining seats in the 2002 election) until 2020 and 2022. This was also the last election in which the Republicans made any gains in a Presidential election year until 2020.
Results
Federal
↓
202
1
232
Democratic
I
Republican
Summary of the 2004 United States House of Representatives elections results
Incumbent resigned January 20, 2004 when convicted of vehicular manslaughter. New member electedJune 1, 2004. Democratic gain. Winner was subsequently re-elected in November, see below.
Incumbent resigned June 11, 2004 due to health issues. New member electedJuly 20, 2004. Democratic hold. Winner was subsequently re-elected in November, see below.
On December 4, 2004, a run-off election was held to determine the winner of the 3rd and 7th congressional districts. In the 3rd district, Charlie Melancon narrowly defeated Billy Tauzin III. In the 7th district, Charles Boustany defeated Willie Mount. Thus, both seats switched to the opposite party.
All seven incumbents who ran for re-election, none of whom faced viable challengers, were returned to Congress. None received less than 60% of the vote, and one received over 80%. In addition, the two seats vacated by retiring Republicans were both reclaimed by Republicans despite Democratic hopes to gain at least one seat in the vulnerable 8th district.
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