Kansas Senate 2026 polling average as of Oct 19, 2026, based on 14 published polls from Apr 22, 2026 to Oct 14, 2026. Election Day is Tuesday, Nov. 3, 2026.
If the 2026 Kansas U.S. Senate election were held today, who would you vote for?
| Poll ended | Pollster | Sample | Result |
|---|---|---|---|
| Oct 14, 2026 | InsiderAdvantage | 1,200 likely voters | Hamilton 47%, Marshall 48% |
| Oct 10, 2026 | InsiderAdvantage | 1,200 likely voters | Hamilton 47.5%, Marshall 46.7% |
| Oct 4, 2026 | YouGov | 2,253 likely voters | Hamilton 48%, Marshall 45% |
| Oct 4, 2026 | GBAO (D) | 600 likely voters | Hamilton 46%, Marshall 41% |
| Oct 1, 2026 | Trafalgar Group (R) | 1,095 likely voters | Hamilton 44.4%, Marshall 43.5% |
| Sep 30, 2026 | The New York Times/Siena University | 605 likely voters | Hamilton 44.9%, Marshall 44.8% |
| Sep 24, 2026 | Wedgewood Polls | 500 likely voters | Hamilton 50%, Marshall 48% |
| Sep 16, 2026 | Global Strategy Group for Democratic Attorneys General Association (D) | 800 likely voters | Hamilton 47%, Marshall 43% |
| Sep 16, 2026 | Emerson College for Nexstar | 750 likely voters | Hamilton 44.8%, Marshall 43.3% |
| Sep 10, 2026 | co/efficient | 915 likely voters | Hamilton 44%, Marshall 49% |
| Aug 16, 2026 | Global Strategy Group for People Over Politics Action Fund (D) | 800 likely voters | Hamilton 44%, Marshall 43% |
| Aug 8, 2026 | Public Policy Polling for Senate Majority PAC (D) | registered voters | Hamilton 45%, Marshall 46% |
| Jul 13, 2026 | GBAO (D) | 600 likely voters | Hamilton 43%, Marshall 47% |
| Jan 28, 2026 | Tavern Research | 1,013 likely voters | Hamilton 51%, Marshall 49% |
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Polls compiled by The New York Times, used under CC BY 4.0. Averages calculated by People’s Poll (Methods). Updated Oct 19, 2026. Published by Onward Media LLC.