1970Final results
1970 election for Illinois Legislative District 48
Illinois State Senate · Illinois
Egbert B. Groen (R) won with 58.6% of the vote, defeating Leo Lee Vance (D) by 17.3 points.
Egbert B. GroenRepublican · winner · incumbent
58.6%35,973
Leo Lee VanceDemocrat
41.4%25,388
61,361 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