2020Final results
2020 election for Illinois Representative District 89
Illinois House of Representatives · Illinois
Andrew Chesney (R) won with 73.4% of the vote, defeating John Cook (Oth) by 46.9 points.
Andrew ChesneyRepublican · winner · incumbent
73.4%38,341
John CookOther party
26.6%13,864
52,205 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