1974Final results
1974 election for Illinois Representative District 1
Illinois House of Representatives · Illinois
3 seats: Brian B. Duff (R), John Porter (R), Harold A. Katz (D) won.
3 seatsBrian B. DuffRepublican · winner · incumbent
31.0%55,330
John PorterRepublican · winner · incumbent
29.1%51,902
Harold A. KatzDemocrat · winner · incumbent
25.8%46,059
Dorothy HenehanDemocrat
14.1%25,145
178,436 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: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET