Illinois 9th — House 2026 Rep Primary
The Illinois 9th — House rep primary is scheduled for March 17, 2026. The model makes Mark Su the clear favorite at 86%, ahead of Paul Friedman at 5% in a 4-candidate field. Mark Su leads the field in reported fundraising and John Elleson 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
- Mark Su — 86%
- Paul Friedman — 5%
- John Elleson — 5%
- Rocío Cleveland — 4%
Probabilities update daily from polls, fundraising, endorsements, and historical results. Last updated July 23, 2026.