Partisan composition of state senates
Thepartisan composition of state senates refers to whichpolitical party holds the majority of seats in thestate senate. Altogether, in the 50state senates, there are 1,973state senators. The map below highlights each state based on which party controls its state senate.
Cumulative numbers
As ofNovember 26, 2025, 1,947state senators were affiliated with either the Democratic or Republican parties. This total is updated monthly.
| Partisan balance of all 7,386 state legislative seats | ||||||||
|---|---|---|---|---|---|---|---|---|
| Legislative chamber | ![]() | ![]() | Other | Vacant | ||||
| State senates | 829 | 1,118 | 6 | 20 | ||||
| State houses | 2,386 | 2,966 | 20 | 41 | ||||
| Total: | 3,215 | 4,084 | 26 | 61 | ||||
Vacancies
As ofOctober 29, 2025, there were 17 state senate vacancies in 13 states. This total is updated monthly.
| State | Vacancies |
|---|---|
| Arkansas | 1 |
| Florida | 2 |
| Georgia | 1 |
| Iowa | 1 |
| Kentucky | 1 |
| Massachusetts | 1 |
| Michigan | 1 |
| Minnesota | 2 |
| Mississippi | 2 |
| New Mexico | 1 |
| South Carolina | 1 |
| Texas | 2 |
| West Virginia | 1 |
Minor party
As of October 29, 2025, there werefive state senators in four states identifying as independents or parties other than Democratic and Republican. This total is updated monthly.
| State | Independents/Minor party |
|---|---|
| Florida | 1 |
| Nebraska | 2 (Nonpartisan) |
| Utah | 1 (Other) |
| Vermont | 1 (VT Progressive Party) |
Election breakdowns
Clickhere for information on partisan control of state senates over time.
States
Clickhere for a state-by-state breakdown of the partisan composition of state senates.
Potential ties
A total of 61 state legislative chambers around the country have aneven number of members, raising the possibility of a tie between the two major parties. In some instances, a bipartisan coalition of legislators is formed to act as leadership.[1] This tactic has not been the universal approach, however; some legislative bodies have used a coin toss, gubernatorial choice, shared time, choosing co-leaders, or dividing chairperson positions between the parties.[2]
See also
- Partisan composition of state legislatures
- Historical partisan composition of state legislatures
- Historical partisan composition of state senates
- Partisan composition of state houses
- Historical partisan composition of state houses


