1978Final results
1978 election for Illinois Legislative District 1
Illinois State Senate · Illinois
Roger A. Keats (R) won with 59.6% of the vote, defeating Cathleen Quinn Orourke (D) by 19.2 points.
Roger A. KeatsRepublican · winner
59.6%44,379
Cathleen Quinn OrourkeDemocrat
40.4%30,078
74,459 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