Kansas Senate race: 2026 result

Kansas · election of 3 November 2026Incumbent: Roger Marshall (R)Updated November 10 at 7:44 PM EST

Called · unofficial count

Hamilton (D) 51.0%, Marshall (R) 46.0%.

Adam Hamilton (Democratic) won the Kansas Senate race in the 3 November 2026 election, with 51.0% of the vote to Roger Marshall's 46.0%, a margin of 5.1 points (55,585 votes). The seat changes from Republican to Democratic. Count as of November 10 at 7:44 PM EST, not yet certified.

What stands out in Kansas Senate race

from the count and past results

Democratic gain: Adam Hamilton defeated the Republican incumbent, Roger Marshall.
Cook Partisan Voting Index for the state: R+8. A Democrat won it.
Decided by 5.1 points (55,585 votes): the 7th closest Senate race of 2026 among the 35 with a vote count.
Hamilton's party gained 9.2 points of vote share on the previous election for this seat.
Roger Marshall: incumbent lost reelection.

Kansas Senate race: candidates and votes

Called · unofficial count

General election, 3 November 2026 · as of November 10 at 7:44 PM EST

Candidate	Party	Votes	%
Adam Hamilton	Democratic	561,143	51.0
Roger Marshall · incumbent	Republican	505,558	46.0
David Graham	Libertarian	33,195	3.0
Total		1,099,896	100.0

Democratic gain from Republican.

Related races

Kansas governor's race · not called
Kansas: House districts in 2026
Closest Senate races: MS Senate (0.5), LA Senate (1.8), FL Senate (2.9), IA Senate (4.2), SC Senate (4.5)
Senate results 2026: every race

Sources

Votes and candidates: Wikipedia, 2026 United States Senate election in Kansas (revision 1384953381, November 10 at 7:44 PM EST), which cites the state election office and AP race calls.
Race call and incumbent: Wikipedia, 2026 United States Senate elections (revision 1385106255). A race is shown as called only when that article marks a winner.
Text and figures from Wikipedia are available under CC BY-SA 4.0. Results are unofficial until the state certifies them; this page updates with the source.