2018Final results
2018 election for Illinois Representative District 77
Illinois House of Representatives · Illinois
Kathleen Willis (D) won with 70.6% of the vote, defeating Anthony Airdo (R) by 41.2 points.
Kathleen WillisDemocrat · winner · incumbent
70.6%15,420
Anthony AirdoRepublican
29.4%6,429
21,849 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET