Illinois 13

Jeff Wilson (R) vs Nikki Budzinski (D).

Count in progress (56% of the expected vote): Nikki Budzinski (D) 60.4%; Jeff Wilson (R) 39.6%. Source: The Associated Press.

Cook: Solid D. Public polls: 0.

Atlas pre-election model — built only from data frozen on October 29, 2026; first published November 3 after polls closed, so it is a test of the method, not a prediction. Republican chance in that model: 0%.