1974Final resultsIncumbent defeated
1974 election for Illinois Representative District 42
Illinois House of Representatives · Illinois
George Sangmeister (D), Leroy Vanduyne (D) and Harry D. Leinenweber (R) won the district's 3 seats.
3 seatsGeorge SangmeisterDemocrat · winner · incumbent
31.9%44,682
Leroy VanduyneDemocrat · winner
26.1%36,506
Harry D. LeinenweberRepublican · winner · incumbent
21.4%29,935
W. Robert BlairRepublican · incumbent
20.7%28,957
140,080 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 1974
Races before and after
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)