1978Final results
1978 election for Illinois Representative District 1
Illinois House of Representatives · Illinois
3 seats: Mary Jeanne Hallstrom (R), Harold A. Katz (D), John L. Birkinbine (R) won.
3 seatsMary Jeanne HallstromRepublican · winner
33.6%75,140
Harold A. KatzDemocrat · winner · incumbent
27.7%61,966
John L. BirkinbineRepublican · winner
26.3%58,730
Joseph F. Rossberger Jr.Democrat
12.3%27,530
223,366 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 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET