Polls · Kansas Senate
InsiderAdvantage , 14 October 2026
InsiderAdvantage has Roger Marshall ahead of Adam Hamilton by 1 points in Kansas Senate, 48% to 47%. Since its previous poll (10 October 2026): Roger Marshall +1 (47 → 48), Adam Hamilton −1 (48 → 47).
| Race | Kansas Senate |
|---|---|
| Fieldwork | 13 October 2026 – 14 October 2026 |
| Stage | General election |
| Sample | 1,200 (likely voters) |
| Pollster's lean | Mostly works for Republicans |
| Method | – |
| Release | release |
| In our average | Yes |
Main
 Roger Marshall R |
48 | |
| Adam Hamilton D | 47 | |
| David Graham | 3 | |
| Undecided | 2 |
Margin on the decided vote: R+1.0; after our adjustments D+2.5, which includes a move of 0.1 points to the Democrats with the national trend since the poll (↻).
Against the other polls
InsiderAdvantage's previous poll of this race, 10 October 2026 →
Photo credits
1 official portrait from the Biographical Directory of the United States Congress (US government work, public domain): Roger Marshall.