Candidate Adam Hamilton holds a narrow advantage over Roger Marshall in a new Emerson survey of likely voters conducted Sept. 15-16. Hamilton recorded 45% support compared to 43% for the incumbent, while candidate David C. Graham polled at 4% among the respondents.

The survey sampled 750 likely voters to assess the current standings in the 2026 Kansas Senate race. The data indicates a competitive contest for the seat with a two percentage point margin between the top two candidates as the election cycle begins.