Illinois 12th — House 2026 General Election
The Illinois 12th — House general election is on November 3, 2026. The model makes Republican Mike Bost the heavy favorite at 100%, with Democrat Julie Fortier at 0%. Mike Bost is the incumbent and leads the field in reported fundraising. No public polling is available for this race, so the forecast leans on fundraising, endorsements, candidate profiles, and historical results.
Current win probabilities
- Mike Bost (incumbent) — 100%
- Julie Fortier — 0%
Probabilities update daily from polls, fundraising, endorsements, and historical results.