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Sources via Akashic Edge methodology: academic election datasets, certified state results, Census, ACS.

Home›State Senate Chambers

State senate index

State Senate Chambers

Partisan breakdown of 48 state senate chambers from 1972-2022 elections. Click any state to see district-level detail.

View state houses Congressional districts

Democratic Seats

804

20 D-controlled chambers

Republican Seats

979

27 R-controlled chambers

Chambers

48

1972-2022 election data

Total Seats

1,833

All state senate seats tracked

Chamber Control by State

48 chambers

20Dem control

27Rep control

1Other / tied

View current chamber compositions on Ballotpedia →

Connecticut2022

Massachusetts2022

Mississippi2019

New Hampshire2022

North Carolina2022

North Dakota2022

Pennsylvania2022

Rhode Island2022

South Carolina2020

South Dakota2022

Senate of Virginia

West Virginia2022

Data source: Klarner State Legislative Election Returns (1972-2022). Nebraska's unicameral legislature is included here. Current compositions may differ due to special elections, party switches, and vacancies.