Michigan Governor 2026 Rep Primary
The Michigan Governor rep primary is scheduled for August 4, 2026. The model favors John James at 55%, ahead of Perry Johnson at 32% in a 3-candidate field. Perry Johnson leads the field in reported fundraising and John James has the most tracked endorsements. Public polling is available for this race and feeds the forecast alongside fundraising, endorsements, and historical results.
Current win probabilities
- John James — 55%
- Perry Johnson — 32%
- Mike Cox — 13%
Probabilities update daily from polls, fundraising, endorsements, and historical results. Last updated September 11, 2026.