Roosevelt's popularity allowed his Democratic Party to gain twenty seats from the Republicans and minor parties, cementing the Democratic majority. Also, Americans rallied behind Allied success in World War II, and in turn voted favorably for the administration's course of action.
As of 2024[update], this is the last time the House of Representatives was made up of four parties (in December 2020, House Republican Paul Mitchell became an Independent, resulting in there being four partisan affiliations (Republican, Democratic, Independent, and Libertarian) though not four political parties).
Incumbent resigned April 15, 1944 to join the armed forces but was later medically discharged. Incumbent re-electedNovember 7, 1944 to fill his own vacancy.
Incumbent resigned September 15, 1944. New representative elected November 7, 1944. Democratic hold. Winner was also elected to the next term; see below.
Incumbent died October 19, 1944. New representative electedNovember 7, 1944; see Widow's succession. Democratic hold. Winner did not run for the next term; see below.
Florida redistricted for this cycle, converting the 6th seat it had previously gained at reapportionment from an at-large seat to an additional district near Fort Lauderdale.
New York, after having used 2 at-large districts to avoid redistricting at the last reapportionment, redistricted into 45 districts for this election, with substantial boundary changes across the state. Manhattan went from 10 districts to 6, with Long Island, Brooklyn and Queens going from 10 to 15.
Incumbent resigned August 9, 1944. New Resident commissioner appointed. Liberal gain. Successor was to hold office at the pleasure of the President of the Philippines.
^Bennet, after losing in the Republican primary, ran on the Democratic, American Labor, and Liberal lines, but immediately caucused with the Republicans on election.
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