1970Final results
1970 election for Illinois Legislative District 17
Illinois State Senate · Illinois
Thad L. Kusibab (D) won with 80.3% of the vote, defeating William J. Miedema (R) by 60.5 points.
Thad L. KusibabDemocrat · winner · incumbent
80.3%37,231
William J. MiedemaRepublican
19.7%9,156
46,387 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