2020Final results
2020 election for Illinois Representative District 77
Illinois House of Representatives · Illinois
Kathleen Willis (D) won with 67.2% of the vote, defeating Anthony Airdo (R) by 34.4 points.
Kathleen WillisDemocrat · winner · incumbent
67.2%21,772
Anthony AirdoRepublican
32.8%10,631
32,403 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET