1970Final results
1970 election for Illinois Legislative District 33
Illinois State Senate · Illinois
Dennis J. Collins (R) won with 59.2% of the vote, defeating Vito C. Bianco (D) by 18.4 points.
Dennis J. CollinsRepublican · winner · incumbent
59.2%31,643
Vito C. BiancoDemocrat
40.8%21,803
53,446 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