Illinois 37th State Senate District
Akashic| Donald Trump ✓Republican | 58.9% | 63,801 |
|---|---|---|
| Kamala HarrisDemocratic | 38.5% | 41,708 |
| Robert F. Kennedy Jr.Independent | 2.5% | 2,732 |
County-level results (12 counties) — table
| County | Winner | Margin |
|---|---|---|
| Bureau County, IL | Republican | R+24.3 |
| DeKalb County, IL | Democratic | D+2.0 |
| Henry County, IL | Republican | R+24.4 |
| LaSalle County, IL | Republican | R+18.5 |
| Lee County, IL | Republican | R+22.2 |
| Marshall County, IL | Republican | R+36.0 |
| Ogle County, IL | Republican | R+29.3 |
| Peoria County, IL | Democratic | D+4.6 |
| Rock Island County, IL | Democratic | D+9.6 |
| Stark County, IL | Republican | R+45.6 |
| Whiteside County, IL | Republican | R+14.7 |
| Woodford County, IL | Republican | R+42.0 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 38.5%Harris41,708 | 58.9%Trump63,801 | 2.5%Kennedy2,732 | 108,241 | ||
| R | 39.9%Biden44,223 | 57.9%Trump64,245 | 2.2%Jorgensen2,479 | 110,947 | ||
| R | 36.7%Clinton37,961 | 55.6%Trump57,479 | 7.7%Johnson8,014 | 103,454 | ||
| R | 46.3%Obama46,450 | 53.7%Romney53,788 | 0.0% | 100,238 | ||
| R | 48.6%Obama51,719 | 49.0%McCain52,164 | 2.4%Nader2,548 | 106,431 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −0.4% |
| 2012 | −7.3% |
| 2016 | −18.9% |
| 2020 | −18.0% |
| 2024 | −20.4% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of just 2 points, Illinois Senate District 37 sits at the competitive edge of a state that leans reliably Democratic statewide, making its roughly 217,000 residents an outsized factor in legislative balance.
Across the recorded series it reached a Republican high of 20.4 points in 2024. Between 2020 and 2024 the district moved 2.4 points toward the Republican candidate; the 2024 margin was 20.4 points.
A population of 217,029, a 86% non-Hispanic-white share, and a median household income of $76,363 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 45 and State Senate District 27.
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Illinois 37th State Senate District. Akashic. https://akashic.app/sld-upper/17037/. Accessed May 20, 2026. License: CC BY 4.0.