99chambers

Wisconsin State Senate · 2026 general · 17 of 33 seats up

Democrats win a majority in the Wisconsin State Senate

Democrats hold 18 seats and Republicans 15; 17 make a majority. 3 seats changed party.

17 for a majorityBefore the electionD 15R 18AfterD 18R 15D +3 · R −3

3 seats flipped to Democrats0 to Republicans

Seats not up in this election count with their holders. Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET

3Seats flipped3 to Democrats, 0 to Republicans
1Incumbents defeatedIn the general election
7Open seatsNo incumbent on the ballot
2Uncontested seats2 Democratic, 0 Republican
0Decided by under 5 pointsCalled and uncalled

Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET

Every race, by how close it was

All 15 races by the winner’s margin, D − R. The shaded band holds the 0 races decided by under 5 points. Ringed dots flipped; amber dots are still being counted. The 2 seats won without an opponent sit at the ends.

  • Democratic
  • Republican
  • Counting
  • Flipped
  • Under 5 points
R+50R+30R+10D+10D+30D+50ClosestSD-25 R+5.7Widest flip to DSD-5 D+14.0

Unofficial returns. Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET

Seats that flipped

Districts that elected the other party.

Incumbents who lost

Members defeated in the general election.

Closest called races

Smallest winning margins.

Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET

Wisconsin State Senate in other elections

Also on this ballot

Sources