1980Final results
1980 election for Illinois Legislative District 45
Illinois State Senate · Illinois
Roger A. Sommer (R) won with 70.8% of the vote, defeating Donald L. Baker (D) by 41.5 points.
Roger A. SommerRepublican · winner · incumbent
70.8%63,105
Donald L. BakerDemocrat
29.2%26,067
89,172 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