1976Final results
1976 election for Illinois Legislative District 48
Illinois State Senate · Illinois
John Linebaugh Knuppel (D) won with 55.3% of the vote, defeating Robert R. Heier (R) by 10.6 points.
John Linebaugh KnuppelDemocrat · winner · incumbent
55.3%44,580
Robert R. HeierRepublican
44.7%36,026
80,608 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 1976
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET