Missouri State Senate · 2026 general · 17 of 34 seats up
Republicans keep a majority in the Missouri State Senate
Democrats hold 12 seats and Republicans 21, with 1 still being counted; 18 make a majority. 2 seats changed party.
2 seats flipped to Democrats0 to Republicans1 still uncalled
Seats not up in this election count with their holders. Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Every race, by how close it was
All 17 races by the winner’s margin, D − R. The shaded band holds the 1 race decided by under 5 points. Ringed dots flipped; amber dots are still being counted. The seat won without an opponent sits at its end.
- Democratic
- Republican
- Counting
- Flipped
- Under 5 points
Unofficial returns. Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
Closest called races
Smallest winning margins.
Biggest swings
Change in margin from the last race on the same lines.
Source: civicAPI unofficial results and race callsUpdated Nov 7, 2026, 3:01 PM ET
How far each district moved
Change in each contested district’s margin from the previous election, in 2-point bins. The median district moved D +16.7.
10 contested districts; districts uncontested in either election are left out.
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Missouri State Senate in other elections
- 2024 Rep. 24–10
- 2022 Rep. 24–10
- 2020 Rep. 24–10
- 2018 Rep. 25–9
- The Missouri State Senate →
Also on this ballot
Sources