1984Final results
1984 election for Illinois Representative District 30
Illinois House of Representatives · Illinois
Michael Madigan (D) won with 67.6% of the vote, defeating Leonard Kaczanowski (R) by 35.2 points.
Michael MadiganDemocrat · winner · incumbent
67.6%27,739
Leonard KaczanowskiRepublican
32.4%13,285
41,024 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1984
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET