1998Final results
1998 election for Illinois Representative District 75
Illinois House of Representatives · Illinois
Mary K. Obrien (D) won with 61.6% of the vote, defeating Dennis Peters (R) by 23.1 points.
Mary K. ObrienDemocrat · winner · incumbent
61.6%21,125
Dennis PetersRepublican
38.4%13,192
34,317 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 1998
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET