Schuyler Colfax Republican Schuyler Colfax Republican The 1864–65 United States House of Representatives elections were held on various dates in various states between June 5, 1864, and November 7, 1865, in the midst of the American Civil War and President Abraham Lincoln's reelection.

Each state set its own date for its elections to the House of Representatives.

The opposition Democrats were deeply divided between the Copperheads, a group that demanded an immediate negotiated settlement with the Confederate States of America, and the War Democrats, who supported the war.

With the Democrats lacking any coherent message, they lost half their seats to Lincoln's Republican Party, who increased their majority to a commanding level.

Three former Confederate States held elections in 1865 that were rejected by Congress.

On October 31, 1864, the new state of Nevada elected Republican Henry G. Worthington to finish the term ending March 3, 1865.

Worthington was not renominated for the next term, however, and on November 7, 1865, Republican Delos R. Ashley was elected November 7, 1865 for the term that had already begun but would not formally meet until December 4, 1865.