1990Final results
1990 election for Illinois Representative District 80
Illinois House of Representatives · Illinois
Robert P. Regan (R) won with 50.1% of the vote, defeating John A. Ostenburg (D) by 0.2 points.
Robert P. ReganRepublican · winner · incumbent
50.1%11,756
John A. OstenburgDemocrat
49.9%11,718
23,474 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 1990
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET