1980Final results
1980 election for Illinois Representative District 42
Illinois House of Representatives · Illinois
3 seats: Jack Davis (R), Harry D. Leinenweber (R), Leroy Vanduyne (D) won.
3 seatsJack DavisRepublican · winner · incumbent
29.6%80,585
Harry D. LeinenweberRepublican · winner · incumbent
27.9%75,926
Leroy VanduyneDemocrat · winner · incumbent
27.0%73,697
Lloyd William BetourneyDemocrat
15.5%42,284
272,492 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 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET