Harriet Hageman, the Republican nominee and former U.S. representative, faces Democrat James Byrd in the November 3, 2026, contest for Wyoming’s open Senate seat previously held by Cynthia Lummis. The state’s consistent Republican dominance, reflected in recent presidential margins exceeding 40 points and all major forecasters rating the race Solid or Safe Republican, underpins trader expectations of a substantial GOP victory. With primaries concluded in August and no general-election polling released, market probabilities remain distributed across Republican margin buckets between 25 and 45 points, indicating uncertainty over the precise scale of the win rather than any serious challenge to the outcome. Limited campaign activity and the absence of late-breaking events have kept sentiment stable, though turnout patterns or national political shifts within the final weeks could still influence the final spread.