electionsmcp › races › Illinois State Senate District 37
Illinois State Senate District 37
The current officeholder, the 2024 result, and a precinct-level model you can run yourself — built from how Illinois actually voted.
Model Illinois State Senate District 37 →
Current officeholder
Li Arellano, Jr. Republican
2024 result
Republican R+100.0
2024 votes cast
13,003
Office
State Senate
Precinct results — 2024 general
259 precincts reported in Illinois State Senate District 37's 2024 general election. The twenty largest:
| Precinct | Winner | Margin | Votes |
|---|---|---|---|
| 17161-COE | Republican | R+77.5 | 1,127 |
| 17161-HAMPTON 1 | Republican | R+74.2 | 952 |
| 17073-PHENIX | Republican | R+100.0 | 842 |
| 17073-GENESEO 4 | Republican | R+100.0 | 840 |
| 17161-PORT BYRON | Republican | R+75.4 | 781 |
| 17195-MONTMORENCY 2 | Republican | R+100.0 | 739 |
| 17141-FLAGG 4 | Republican | R+100.0 | 717 |
| 17073-GENESEO 1 | Republican | R+100.0 | 685 |
| 17143-RA01 - 166 | Republican | R+100.0 | 683 |
| 17203-WORTH 7 | Republican | R+100.0 | 682 |
| 17143-PE60 - 155 | Republican | R+100.0 | 664 |
| 17195-MT. PLEASANT 2 | Republican | R+100.0 | 631 |
| 17037-MALTA 1 | Republican | R+100.0 | 622 |
| 17037-SHABBONA 1 | Republican | R+100.0 | 617 |
| 17073-GENESEO 5 | Republican | R+100.0 | 616 |
| 17195-FULTON 4 | Republican | R+100.0 | 616 |
| 17143-ME04 - 58 | Republican | R+100.0 | 614 |
| 17195-UNION GROVE 1 | Republican | R+100.0 | 605 |
| 17143-CH04 - 6 | Republican | R+100.0 | 597 |
| 17143-CH03 - 5 | Republican | R+100.0 | 589 |
All 259 precincts are modelable — open the race in the simulator and drill to precinct grain.
Find your district
Enter a ZIP code or a district (e.g. NC-4) to find your U.S. House district and who represents it.
Model Illinois State Senate District 37 in five steps
- Set the candidates. Name the contenders for the Illinois State Senate District 37 (or keep the generic Democrat / Republican defaults). The map starts from real 2024 results in every precinct.
- Apply a swing. Move vote share statewide, or by demographic cohort, with a slider. The map and the running tally recompute instantly.
- Model turnout. Mobilize or depress turnout for any group — turnout and persuasion are modeled separately, the way a real campaign thinks about them.
- Drill to precincts. Zoom from the state down to individual precincts and override any of them by hand.
- Roll up & share. Roll the result up to chamber control, then publish a shareable, frozen link to your scenario.
Open Illinois State Senate District 37 in the simulator →
Frequently asked
Who represents Illinois State Senate District 37?
Li Arellano, Jr. (Republican) currently holds this State Senate seat.
What was the 2024 result in Illinois State Senate District 37?
R+100.0 — 0 Democratic, 13,003 Republican, of 13,003 votes cast.
Can I model this race myself?
Yes — open it in the electionsmcp simulator and model vote-share swing and turnout from the real 2024 baseline, down to the precinct, then roll it up to chamber control.