1970Final results
1970 election for Illinois Legislative District 42
Illinois State Senate · Illinois
John Linebaugh Knuppel (D) won with 50.7% of the vote, defeating Joseph D. Simmons Jr. (R) by 1.5 points.
John Linebaugh KnuppelDemocrat · winner
50.7%31,932
Joseph D. Simmons Jr.Republican
49.3%31,011
62,943 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