2020 general · November 3, 2020
2020 Illinois State Senate election results, district by district
Every Illinois State Senate district in the 2020 general election: winners, margins, unopposed seats and seats that changed party.
Seats after the election
Democrats controlled the chamber · 59 seats
After the electionD 41 · R 18
Races22
Changed party1
Unopposed50%11 races
Incumbents defeated0
Every district
D 19 · R 3
| Race | Winner | Won by | Notes |
|---|---|---|---|
| LD-1 | Antonio Munoz (D) | Unopposed | |
| LD-4 | Kimberly Lightford (D) | Unopposed | |
| LD-6 | Sara Feigenholtz (D) | Unopposed | |
| LD-7 | Heather A. Steans (D) | Unopposed | |
| LD-10 | Rob Martwick (D) | 7.6 | |
| LD-11 | Celina Villanueva (D) | 59.1 | |
| LD-13 | Robert Peters (D) | Unopposed | |
| LD-16 | Jacqueline Collins (D) | Unopposed | |
| LD-19 | Mike Hastings (D) | Unopposed | |
| LD-22 | Cristina Castro (D) | Unopposed | |
| LD-25 | Karina Villa (D) | 1.9 | Flipped |
| LD-28 | Laura Murphy (D) | Unopposed | |
| LD-31 | Melinda Bush (D) | 17.0 | |
| LD-34 | Steve Stadelman (D) | 23.4 | |
| LD-37 | Win Stoller (R) | Unopposed | |
| LD-40 | Patrick Joyce (D) | 16.9 | |
| LD-43 | John Connor (D) | 29.1 | |
| LD-46 | Dave Koehler (D) | 7.8 | |
| LD-49 | Meg Loughran Cappel (D) | 12.4 | |
| LD-52 | Scott M. Bennett (D) | 26.9 | |
| LD-55 | Darren Bailey (R) | 53.4 | |
| LD-58 | Terri Bryant (R) | Unopposed |
Illinois State Senate
Results are each source's final count; margins are the winner's lead over the runner-up in points of the vote. Source: MIT Election Data and Science Lab