# 1864–65 United States House of Representatives elections

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. Members were elected before the first session of the 39th United States Congress convened on December 4, 1865, including the at-large seat from the new state of Nevada, and the 8 from Tennessee, the first secessionist state to be readmitted. The other 10 secessionist states had not yet been readmitted, and therefore were not seated.
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.
The Unionists lost seven seats, retaining control of 18 seats (some classify the Representatives as including 13 Unconditional Unionists and five Unionists), all from the border states of Maryland, Tennessee, and Kentucky, as well as West Virginia.

## Election summaries

One new seat was added for the new State of Nevada and 8 vacancies were filled by the readmission of Tennessee, the first secessionist state to be readmitted. Three former Confederate States held elections in 1865 that were rejected by Congress.
| 38 | 137 | 18 |
| Democratic | Republican | Unionist |
| State | Type | Date | Total seats | Democratic | Democratic | Republican | Republican | Unionist | Unionist |
| State | Type | Date | Total seats | Seats | Change | Seats | Change | Seats | Change |
| Oregon | At-large | June 5, 1864 | 1 | 0 | | 1 | | 0 | |
| Vermont | District | September 6, 1864 | 3 | 0 | | 3 | | 0 | |
| Maine | District | September 11, 1864 | 5 | 0 | 1 | 5 | 1 | 0 | |
| Indiana | District | October 10, 1864 | 11 | 2 | 5 | 9 | 5 | 0 | |
| Nevada | At-large | October 10, 1864 | 1 | 0 | | 1 | 1 | 0 | |
| Ohio | District | October 10, 1864 | 19 | 2 | 12 | 17 | 12 | 0 | |
| Pennsylvania | District | October 10, 1864 | 24 | 8 | 4 | 16 | 4 | 0 | |
| West Virginia | District | October 22, 1864 | 3 | 0 | | 0 | | 3 | |
| California | District | November 8, 1864 (Election Day) | 3 | 0 | | 3 | | 0 | |
| Delaware | At-large | November 8, 1864 (Election Day) | 1 | 1 | | 0 | | 0 | |
| Illinois | District + 1 at-large | November 8, 1864 (Election Day) | 14 | 3 | 6 | 11 | 6 | 0 | |
| Iowa | District | November 8, 1864 (Election Day) | 6 | 0 | | 6 | | 0 | |
| Kansas | At-large | November 8, 1864 (Election Day) | 1 | 0 | | 1 | | 0 | |
| Maryland | District | November 8, 1864 (Election Day) | 5 | 2 | 1 | 0 | | 3 | 1 |
| Massachusetts | District | November 8, 1864 (Election Day) | 10 | 0 | | 10 | | 0 | |
| Michigan | District | November 8, 1864 (Election Day) | 6 | 0 | 1 | 6 | 1 | 0 | |
| Minnesota | District | November 8, 1864 (Election Day) | 2 | 0 | | 2 | | 0 | |
| Missouri | District | November 8, 1864 (Election Day) | 9 | 1 | 1 | 8 | 7 | 0 | 8 |
| New Jersey | District | November 8, 1864 (Election Day) | 5 | 3 | 1 | 2 | 1 | 0 | |
| New York | District | November 8, 1864 (Election Day) | 31 | 10 | 7 | 21 | 7 | 0 | |
| Wisconsin | District | November 8, 1864 (Election Day) | 6 | 1 | 2 | 5 | 2 | 0 | |
| Late elections (after the March 4, 1865 beginning of the term) ||||||||||
| New Hampshire | District | March 14, 1865 | 3 | 0 | 1 | 3 | 1 | 0 | |
| Connecticut | District | April 3, 1865 | 4 | 0 | 1 | 4 | 1 | 0 | |
| Tennessee | District | August 3, 1865 | 8 | 0 | | 0 | | 8 | 8 |
| Rhode Island | District | April 5, 1865 | 2 | 0 | | 2 | | 0 | |
| Kentucky | District | August 7, 1865 | 9 | 5 | 5 | 0 | | 4 | 5 |
| Nevada | At-large | November 7, 1865 | 1 | 0 | | 1 | | 0 | |
| Secessionist states not yet readmitted ||||||||||
| Alabama | District | November 6, 1865 | 6 | | | | | | |
| Arkansas | District | October 9, 1865 | 3 | | | | | | |
| Florida | At-large | November 29, 1865 | 1 | | | | | | |
| Georgia | District | November 15, 1865 | 7 | | | | | | |
| Louisiana | District | November 6, 1865 | 5 | | | | | | |
| Mississippi | District | October 2, 1865 | 5 | | | | | | |
| North Carolina | District | November 9, 1865 | 7 | | | | | | |
| South Carolina | District | November 22, 1865 | 4 | | | | | | |
| Texas | District | October 15, 1866 | 4 | | | | | | |
| Virginia | District | October 12, 1865 | 8 | | | | | | |
| Total | Total | Total | 193 50 vacancies | 38 19.7% | 31 | 137 71.0% | 46 | 18 9.3% | 6 |
Popular vote
Nat. Union
53.47%
Democratic
41.97%
Conservative
2.19%
Radical
1.39%
Independent
1.06%
Others
0.00% :
House seats
Nat. Union
77.72%
Democratic
17.10%
Conservative
2.59%
Radical
2.07%
Independent
0.52% :
Of the rejected elections, Florida's and Mississippi's claimants' parties are unknown, while North Carolina elected 4 Union and 3 Conservative Representatives.

## Special elections
### 38th Congress

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Illinois 5 | Owen Lovejoy | Republican | 1856 | Incumbent died March 25, 1864. New member elected May 19, 1864. Republican hold. | ▌Y Ebon C. Ingersoll (Republican) 62.8% ▌H. M. Wead (Democratic) 37.1% |
| New York 1 | Henry G. Stebbins | Democratic | 1862 | Incumbent resigned October 24, 1864. New member elected November 8, 1864. Democratic hold. | ▌Y Dwight Townsend (Democratic) 54.9% ▌Henry G. Stebbins (National Union) 45.1% |

### 39th Congress

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Maryland 2 | Edwin H. Webster | Unconditional Unionist | 1859 | Incumbent resigned July 1865. New member elected November 7, 1865. Unconditional Unionist hold. | ▌Y John L. Thomas Jr. (Unconditional Unionist) 83.2% ▌William Kimmel (Democratic) 16.8% |
| Massachusetts 6 | Daniel W. Gooch | National Union | 1858 (special) | Incumbent resigned September 1, 1865. New member elected November 7, 1865. National Union hold. | ▌Y Nathaniel P. Banks (National Union) 80.8% ▌Thomas J. Greenwood (Democratic) 19.2% |
| New York 16 | Orlando Kellogg | National Union | 1862 | Incumbent died August 24, 1865. New member elected November 7, 1865. National Union hold. | ▌Y Robert S. Hale (National Union) 54.5% ▌Halsey R. Wing (Democratic) 45.5% |

## Alabama

Alabama did not hold elections to the 39th Congress.

## Arizona Territory

See Non-voting delegates, below.

## Arkansas

Arkansas did not hold elections to the 39th Congress.

## California

Note: This was the first election in which California elected representatives from congressional districts.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| California 1 New seat | Cornelius Cole Redistricted from the at-large district. | Republican | 1863 | Unknown if incumbent retired or lost renomination. New member elected. | ▌Y Donald C. McRuer (Republican) 58.2% ▌Joseph B. Crockett (Democratic) 41.8% |
| California 2 New seat | William Higby Redistricted from the at-large district. | Republican | 1863 | Incumbent re-elected. | ▌Y William Higby (Republican) 61.3% ▌James W. Coffroth (Democratic) 38.7% |
| California 3 New seat | Thomas B. Shannon Redistricted from the at-large district. | Republican | 1863 | Incumbent retired. Republican hold. | ▌Y John Bidwell (Republican) 55.8% ▌Jackson Temple (Democratic) 44.2% |

## Colorado Territory

See non-voting delegates, below.

## Connecticut

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Connecticut 1 | Henry C. Deming | Republican | 1863 | Incumbent re-elected. | ▌Y Henry C. Deming (National Union) |
| Connecticut 2 | James E. English | Democratic | 1861 | Incumbent retired. National Union gain. | ▌Y Samuel L. Warner (National Union) |
| Connecticut 3 | Augustus Brandegee | Republican | 1863 | Incumbent re-elected. | ▌Y Augustus Brandegee (National Union) |
| Connecticut 4 | John Henry Hubbard | Republican | 1863 | Incumbent re-elected. | ▌Y John Henry Hubbard (National Union) |

## Dakota Territory

See non-voting delegates, below.

## Florida

Florida did not hold elections to the 39th Congress.

## Georgia

Georgia did not hold elections to the 39th Congress.

## Idaho Territory

See non-voting delegates, below.

## Louisiana

Louisiana did not hold elections to the 39th Congress.

## Massachusetts

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Massachusetts 1 | Thomas D. Eliot | National Union | 1858 | Incumbent re-elected. | ▌Y Thomas D. Eliot (National Union) 82.77% ▌Sylvanus B. Phinney (Democratic) 17.23% |
| Massachusetts 2 | Oakes Ames | National Union | 1862 | Incumbent re-elected. | ▌Y Oakes Ames (National Union) 72.07% ▌James Maguire (Democratic) 27.93% |
| Massachusetts 3 | Alexander H. Rice | National Union | 1858 | Incumbent re-elected. | ▌Y Alexander H. Rice (National Union) 62.35% ▌John S. Sleeper (Democratic) 37.65% |
| Massachusetts 4 | Samuel Hooper | National Union | 1861 (special) | Incumbent re-elected. | ▌Y Samuel Hooper (National Union) 65.48% ▌Josiah Gardner Abbott (Democratic) 34.52% |
| Massachusetts 5 | John B. Alley | National Union | 1858 | Incumbent re-elected. | ▌Y John B. Alley (National Union) 75.89% ▌Joseph B. Morse (Democratic) 24.11% |
| Massachusetts 6 | Daniel W. Gooch | National Union | 1858 | Incumbent re-elected. | ▌Y Daniel W. Gooch (National Union) 71.66% ▌Thomas J. Greenwood (Democratic) 28.34% |
| Massachusetts 7 | George S. Boutwell | National Union | 1862 | Incumbent re-elected. | ▌Y George S. Boutwell (National Union) 68.99% ▌Theodore H. Sweetser (Democratic) 31.01% |
| Massachusetts 8 | John D. Baldwin | National Union | 1862 | Incumbent re-elected. | ▌Y John D. Baldwin (National Union) 74.75% ▌George Hodges (Democratic) 25.25% |
| Massachusetts 9 | William B. Washburn | National Union | 1862 | Incumbent re-elected. | ▌Y William B. Washburn (National Union) 81.47% ▌Nathaniel Wood (Democratic) 18.53% |
| Massachusetts 10 | Henry Laurens Dawes | National Union | 1856 | Incumbent re-elected. | ▌Y Henry L. Dawes (National Union) 64.74% ▌Harry Arnold (Democratic) 35.26% |

## Mississippi

Mississippi did not hold elections to the 39th Congress.

## Montana Territory

See non-voting delegates, below.

## Nebraska Territory

See non-voting delegates, below.

## Nevada
### 38th Congress

On October 31, 1864, the new state of Nevada elected Republican Henry G. Worthington to finish the term ending March 3, 1865.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Nevada at-large | New state | New state | New state | New seat. Republican gain. | ▌Y Henry G. Worthington (Republican) 9,776 votes Other 6,552 votes |

### 39th Congress

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.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Nevada at-large | Henry G. Worthington | Republican | 1864 (new state) | Incumbent lost renomination. Republican hold. | ▌Y Delos R. Ashley (Republican) 3,691 votes ▌Henry K. Mitchell 2,215 votes |

## New Mexico Territory

See non-voting delegates, below.

## North Carolina

North Carolina did not hold elections to the 39th Congress.

## Ohio

Ohio's delegation swung from 14–5 Democratic to 17-2 Republican as 10 Democratic incumbents lost renomination or re-election.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Ohio 1 | George H. Pendleton | Democratic | 1856 | Incumbent retired to run for Vice President. Republican gain. | ▌Y Benjamin Eggleston (Republican) 57.0% ▌George E. Pugh (Democratic) 43.0% |
| Ohio 2 | Alexander Long | Democratic | 1862 | Incumbent lost renomination. Republican gain. | ▌Y Rutherford B. Hayes (Republican) 58.7% ▌Joseph C. Butler (Democratic) 41,3% |
| Ohio 3 | Robert C. Schenck | Republican | 1862 | Incumbent re-elected. | ▌Y Robert C. Schenck (Republican) 55.3% ▌David A. Houk (Democratic) 44.7% |
| Ohio 4 | John F. McKinney | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y William Lawrence (Republican) 56.1% ▌John F. McKinney (Democratic) 43.9% |
| Ohio 5 | Francis C. Le Blond | Democratic | 1862 | Incumbent re-elected. | ▌Y Francis C. Le Blond (Democratic) 55.2% ▌Moses B. Walker (Republican) 44.8% |
| Ohio 6 | Chilton A. White | Democratic | 1860 | Incumbent lost re-election. Republican gain. | ▌Y Reader W. Clarke (Republican) 55.4% ▌Chilton A. White (Democratic) 44.6% |
| Ohio 7 | Samuel S. Cox | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y Samuel Shellabarger (Republican) 57.1% ▌Samuel S. Cox (Democratic) 42.9% |
| Ohio 8 | William Johnston | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y James R. Hubbell (Republican) 54.8% ▌William Johnston (Democratic) 45.2% |
| Ohio 9 | Warren P. Noble | Democratic | 1860 | Incumbent lost re-election. Republican gain. | ▌Y Ralph P. Buckland (Republican) 73.6% ▌Warren P. Noble (Democratic) 26.4% |
| Ohio 10 | James M. Ashley | Republican | 1862 | Incumbent re-elected. | ▌Y James M. Ashley (Republican) 51.8% ▌Americus V. Rice (Democratic) 48.2% |
| Ohio 11 | Wells A. Hutchins | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y Hezekiah S. Bundy (Republican) 59.8% ▌Wells A. Hutchins (Democratic) 40.2% |
| Ohio 12 | William E. Finck | Democratic | 1862 | Incumbent re-elected. | ▌Y William E. Finck (Democratic) 53.3% ▌Job E. Stevenson (Republican) 46.7% |
| Ohio 13 | John O'Neill | Democratic | 1862 | Incumbent retired. Republican gain. | ▌Y Columbus Delano (Republican) 50.5% ▌Charles Follett (Republican) 49.5% |
| Ohio 14 | George Bliss | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y Martin Welker (Republican) 55.5% ▌George Bliss (Democratic) 44.5% |
| Ohio 15 | James R. Morris | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y Tobias A. Plants (Republican) 57.3% ▌James R. Morris (Democratic) 42.7% |
| Ohio 16 | Joseph W. White | Democratic | 1882 | Incumbent lost re-election. Republican gain. | ▌Y John Bingham (Republican) 52.7% ▌Joseph W. White (Democratic) 47.3% |
| Ohio 17 | Ephraim R. Eckley | Republican | 1862 | Incumbent re-elected. | ▌Y Ephraim R. Eckley (Republican) 59.3% ▌Jonathan H. Wallace (Democratic) 40.7% |
| Ohio 18 | Rufus P. Spalding | Republican | 1862 | Incumbent re-elected. | ▌Y Rufus P. Spalding (Republican) 68.5% ▌Jeptha Wade (Democratic) 31.5% |
| Ohio 19 | James A. Garfield | Republican | 1862 | Incumbent re-elected. | ▌Y James A. Garfield (Republican) 74.1% ▌Halsey H. Moses (Democratic) 25.9% |

## South Carolina

South Carolina did not hold elections to the 39th Congress.

## Tennessee

Elections held late, on August 3, 1865.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Tennessee 1 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y Nathaniel G. Taylor (Unionist) 46.39% ▌J. K. Miller (Conservative) 38.98% ▌ James H. Randolph (Unknown) 14.41% ▌ Thomas D. Arnold (Unknown) 0.23% |
| Tennessee 2 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y Horace Maynard (Unionist) 55.97% ▌Joseph A. Cooper (Conservative) 18.17% ▌Leonidas C. Houk (Unionist) 14.54% ▌Robert K. Byrd (Unionist) 9.46% ▌William Heiskell (Opposition) 1.70% ▌[FNU] Wills (Unionist) 0.16% |
| Tennessee 3 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y William B. Stokes (Unionist) 56.75% ▌Asa Faulkner (Conservative) 32.48% ▌ John R. Hood (Unknown) 10.77% |
| Tennessee 4 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y Edmund Cooper (Unionist) 97.17% ▌ James Mullins (Unknown) 2.83% |
| Tennessee 5 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y William B. Campbell (Unionist) 78.46% ▌Sand J. Carter (Unionist) 21.35% Scattering 0.19% |
| Tennessee 6 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y Samuel M. Arnell (Unionist) 74.79% ▌Dorsey B. Thomas (Conservative) 25.21% |
| Tennessee 7 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y Isaac R. Hawkins (Unionist) 64.62% ▌Emerson Etheridge (Conservative) 35.38% |
| Tennessee 8 | None (vacant due to Civil War) | None (vacant due to Civil War) | None (vacant due to Civil War) | New member elected. Unionist gain. | ▌Y John W. Leftwich (Unionist) 47.99% ▌John Bullock (Unionist) 17.21% ▌ R. S. Saunders (Unknown) 16.87% ▌William C. Dunlap (Conservative) 15.06% ▌ William Hunter (Unknown) 2.87% |

## Texas

Texas did not hold elections to the 39th Congress.

## Utah Territory

See non-voting delegates, below.

## Vermont

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Vermont 1 | Frederick E. Woodbridge | Republican | 1863 | Incumbent re-elected. | ▌Y Frederick E. Woodbridge (National Union) 73.8% ▌Samuel Wells (Democratic) 25.9% |
| Vermont 2 | Justin S. Morrill | Republican | 1854 | Incumbent re-elected. | ▌Y Justin S. Morrill (National Union) 72.0% ▌Robert K. M. Ormsby (Democratic) 27.8% |
| Vermont 3 | Portus Baxter | Republican | 1860 | Incumbent re-elected. | ▌Y Portus Baxter (National Union) 74.0% ▌Giles Harrington (Democratic) 25.9% |

## Virginia

Virginia did not hold elections to the 39th Congress.

## Washington Territory

See non-voting delegates, below.

## West Virginia

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| West Virginia 1 | Jacob B. Blair | Unconditional Unionist | 1863 | Incumbent retired. Unconditional Unionist hold. | ▌Y Chester D. Hubbard (Unconditional Unionist) 62.52% ▌Samuel Crane (Independent) 37.48% |
| West Virginia 2 | William G. Brown Sr. | Unconditional Unionist | 1863 | Incumbent retired. Unconditional Unionist hold. | ▌Y George R. Latham (Unconditional Unionist) 84.46% ▌William B. Zinn (Independent) 10.75% ▌Fontain Smith (Independent) 4.39% ▌W. S. Richardson (Independent) 0.40% |
| West Virginia 3 | Kellian Whaley | Unconditional Unionist | 1863 | Incumbent re-elected. | ▌Y Kellian Whaley (Unconditional Unionist) 66.79% ▌John M. Phelps (Independent) 33.21% |

## Wisconsin

Wisconsin elected six members of congress on Election Day, November 8, 1864.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Wisconsin 1 | James S. Brown | Democratic | 1862 | Incumbent withdrew from election. National Union gain. | ▌Y Halbert E. Paine (National Union) 50.9% ▌John W. Cary (Democratic) 49.1% |
| Wisconsin 2 | Ithamar Sloan | Republican | 1862 | Incumbent re-elected on National Union ticket. Republican hold. | ▌Y Ithamar Sloan (National Union) 60.3% ▌George Baldwin Smith (Democratic) 39.7% |
| Wisconsin 3 | Amasa Cobb | Republican | 1862 | Incumbent re-elected on National Union ticket. Republican hold. | ▌Y Amasa Cobb (National Union) 63.2% ▌Charles Rodolf (Democratic) 36.8% |
| Wisconsin 4 | Charles A. Eldredge | Democratic | 1862 | Incumbent re-elected. | ▌Y Charles A. Eldredge (Democratic) 58.9% ▌A. Scott Sloan (National Union) 41.1% |
| Wisconsin 5 | Ezra Wheeler | Democratic | 1862 | Incumbent retired. National Union gain. | ▌Y Philetus Sawyer (National Union) 56.8% ▌Gabriel Bouck (Democratic) 43.2% |
| Wisconsin 6 | Walter D. McIndoe | Republican | 1862 (special) | Incumbent re-elected on National Union ticket. Republican hold. | ▌Y Walter D. McIndoe (National Union) 66.3% ▌Henry Reed (Democratic) 33.7% |

## Non-voting delegates
### 38th Congress

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Delegate | Party | First elected | Results | Candidates |
| Arizona Territory at-large | New district | New district | New district | New seat. New delegate elected on an unknown date in 1864. Republican gain. | ▌Y Charles Debrille Poston (Republican) 40.62% [data missing] |
| Montana Territory at-large | New district | New district | New district | New seat. New delegate elected. Democratic gain. | ▌Y Samuel McLean (Democratic) 59.39% ▌Wilbur F. Sanders (Republican) 40.62% |

### 39th Congress

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Delegate | Party | First elected | Results | Candidates |
| Arizona Territory at-large | Charles Debrille Poston | Republican | 1864 | Incumbent lost re-election. New member elected September 6, 1865. Republican hold. | ▌Y John N. Goodwin (Republican) ▌Charles Debrille Poston (Republican) |
| Colorado Territory at-large | Hiram Pitt Bennet | Conservative Republican | 1861 | Incumbent retired. Republican hold. | ▌Y Allen Alexander Bradford (Republican) [data missing] |
| Dakota Territory at-large | John B. S. Todd | Democratic | 1862 | Incumbent lost re-election. Republican gain. | ▌Y Walter A. Burleigh (Republican) ▌John B. S. Todd (Democratic) |
| Idaho Territory at-large | William H. Wallace | Unionist | 1860 (Wash. Territory) 1862 (unknown) 1863 | Unknown if incumbent retired or lost. New delegate elected October 10, 1864. Democratic gain. | ▌Y Edward D. Holbrook (Democratic) 53.33% ▌Samuel C. Parks (Unionist) 46.67% |
| Montana Territory at-large | Samuel McLean | Democratic | 1864 | Incumbent re-elected to the term starting March 4, 1865. | ▌Y Samuel McLean (Democratic) 61.12% ▌Gad E. Upson (Republican) 38.88% |
| Nebraska Territory at-large | Samuel Gordon Daily | Republican | 1860 (won contest) | Unknown if incumbent retired or lost. Republican hold. | ▌Y Phineas Hitchcock (Republican) 53.33% [data missing] |
| New Mexico Territory at-large |
| Utah Territory at-large |
| Washington Territory at-large |