IL-06 · House · 2026
Democrats are heavily favored to win this seat
98% probability
Candidates
Last verified 2026-09-14.
Sean Casten
Democrat
Sean Thomas Casten is an American businessman and politician serving as the U.S. representative for Illinois's 6th congressional district since 2019.
Niki Conforti
Republican
Held by a Democrat, seeking re-election.
Why we think this
- This district's baseline partisan lean favors Democrats by about 3 points of margin before anything else is considered.
- The seat is currently held by a Democrat, who is running for re-election -- incumbents usually run ahead of their party's baseline.
Model details -- coefficients, calibration, and the full technical decomposition.
Model house-2026-panel-v1 · computed 2026-09-16