Illinois 15

Mary Miller (R) vs Jennifer Todd (D).

Called by the AP: Mary Miller (R). Mary Miller (R) 65.6%; Jennifer Todd (D) 34.4%. Source: The Associated Press.

Cook: Solid R. 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: 100%.