1988Final results
1988 election for Illinois Legislative District 42
Illinois State Senate · Illinois
Thomas A. Dunn (D) won with 50.8% of the vote, defeating Donald Randich (R) by 1.7 points.
Thomas A. DunnDemocrat · winner · incumbent
50.8%33,769
Donald RandichRepublican
49.2%32,654
66,423 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 1988
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET