1980Final results
1980 election for Illinois Legislative District 9
Illinois State Senate · Illinois
William F. Mahar (R) won with 63.0% of the vote, defeating John J. Burian (D) by 26.0 points.
William F. MaharRepublican · winner
63.0%57,726
John J. BurianDemocrat
37.0%33,899
91,625 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 1980
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET