Illinois 15th — House 2026 Rep Primary
The Illinois 15th — House rep primary is scheduled for March 17, 2026. The model makes Mary Miller the heavy favorite at 93%, with Judy Bowlby at 4% in a 3-candidate field. Mary Miller is the incumbent, leads the field in reported fundraising, and has the most tracked endorsements. No public polling is available for this race, so the forecast leans on fundraising, endorsements, candidate profiles, and historical results.
Current win probabilities
- Mary Miller (incumbent) — 93%
- Judy Bowlby — 4%
- Ryan Tebrugge — 3%
Probabilities update daily from polls, fundraising, endorsements, and historical results.