2020Final results
2020 election for Illinois Legislative District 31
Illinois State Senate · Illinois
Melinda Bush (D) won with 58.5% of the vote, defeating Christopher Kasperski (R) by 17.0 points.
Melinda BushDemocrat · winner · incumbent
58.5%58,274
Christopher KasperskiRepublican
41.5%41,373
99,647 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET
The seat over time
D − R margin in this seat's races around 2020
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET