Illinois 1st — House 2026 Dem Primary
The Illinois 1st — House dem primary is scheduled for March 17, 2026. Jonathan Jackson is running unopposed. Jonathan Jackson is the incumbent. No public polling is available for this race, so the forecast leans on fundraising, endorsements, candidate profiles, and historical results.
Current win probabilities
- Jonathan Jackson (incumbent) — 100%
Probabilities update daily from polls, fundraising, endorsements, and historical results.