1988Final results
1988 election for Illinois Legislative District 49
Illinois State Senate · Illinois
Vince Demuzio (D) won with 65.8% of the vote, defeating David Olson (R) by 31.6 points.
Vince DemuzioDemocrat · winner · incumbent
65.8%53,177
David OlsonRepublican
34.2%27,652
80,829 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 1988
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET