List of United States senators who switched parties
This list includes United States senators who switched parties while serving in the Senate.
List
19th century
| Senator | State | Date | Congress | Old party | New party | Notes |
|---|---|---|---|---|---|---|
| James H. Kyle | South Dakota | 1891 | 52nd | Independent | Populist | |
| William Morris Stewart | Nevada | 1893 | 53rd | Republican | Silver Republican | The Silver Republicans' seniority and committee assignments were not affected by their having left the party.[1] |
| John P. Jones | Nevada | September 4, 1894 | Republican | Silver Republican | ||
| Henry M. Teller | Colorado | June 17, 1896 | 54th | Republican | Silver Republican | |
| Lee Mantle | Montana | Republican | Silver Republican | |||
| Richard F. Pettigrew | South Dakota | Republican | Silver Republican | |||
| Frank J. Cannon | Utah | Republican | Silver Republican | |||
| Fred Dubois | Idaho | 1896 | Republican | Silver Republican | ||
| James H. Kyle | South Dakota | 1897 | 55th | Populist | Republican | |
| William Morris Stewart | Nevada | December 4, 1899 | 56th | Silver Republican | Republican |
20th century
21st century
| Senator | State | Date | Congress | Old party | New party | Notes |
|---|---|---|---|---|---|---|
| Jim Jeffords | Vermont | June 6, 2001 | 107th | Republican | Independent | Caucused with the Democrats. Gave Democrats temporary control of the senate. |
| Joe Lieberman | Connecticut | 2006 | 110th | Democratic | Independent Democrat | Caucused with the Democrats. Lieberman was re-elected on the Connecticut for Lieberman ticket; however, he never formally joined that political party. |
| Arlen Specter[2] | Pennsylvania | April 28, 2009 | 111th | Republican | Democratic | Originally a Democrat |
| Kyrsten Sinema[3] | Arizona | December 9, 2022 | 117th | Democratic | Independent | Caucused with the Democrats |
| Joe Manchin[4] | West Virginia | May 31, 2024 | 118th | Democratic | Independent | Caucused with the Democrats |
See also
- Party switching in the United States
- List of United States representatives who switched parties
- Party switching
- Crossing the floor
References
- ^ "Senators Who Changed Parties During Senate Service (Since 1890)". United States Senate.
- ^ "Longtime GOP Sen. Arlen Specter becomes Democrat". CNN. April 28, 2009. Retrieved April 28, 2009.
- ^ "Sinema leaving the Democratic Party and registering as an independent". CNN. December 9, 2022. Retrieved December 9, 2022.
- ^ Irwin, Lauren (May 31, 2024). "Joe Manchin leaves Democratic Party, files as independent". The Hill. Retrieved May 31, 2024.