1970Final results
1970 election for Illinois Representative District 27
Illinois House of Representatives · Illinois
3 seats: Michael Madigan (D), Walter McAvoy (R), Robert M. Terzich (D) won.
3 seatsMichael MadiganDemocrat · winner
30.1%62,645
Walter McAvoyRepublican · winner · incumbent
23.8%49,581
Robert M. TerzichDemocrat · winner
23.7%49,287
Joseph PotempaRepublican
22.4%46,572
208,085 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 1970
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET