Republican Senator Roger Marshall is suddenly fighting for political survival in Kansas, where a bruising medical debt controversy, hostile crowds and mounting concerns over living costs have helped turn what should have been a safe GOP seat into a toss-up just weeks before the 2026 midterm elections.
The Cook Political Report shifted the Kansas Senate race between Marshall and Democratic challenger Adam Hamilton from Lean Republican to Toss-Up on Tuesday, 6 October. The dramatic change is particularly striking in a state that has not elected a Democratic US senator since 1932.