Roger Marshall holds a leading 60% implied probability to win Leavenworth County in the 2026 Kansas Senate race, ahead of Adam Hamilton at 29%, amid a broader statewide contest rated a toss-up by forecasters. The county's suburban and rural demographics in the Kansas City metro area have historically favored Republicans, supporting Marshall's edge despite Hamilton's crossover appeal as a prominent Methodist pastor. Recent statewide polling averages show the candidates nearly tied, with Hamilton occasionally ahead by slim margins, driven by voter concerns over fuel prices linked to foreign policy and agricultural impacts from trade measures. A scheduled October 21 debate and final weeks of campaigning could influence turnout patterns in this battleground county before the November 3 election.