Illinois 45th State Senate District
Akashic| Donald Trump ✓Republican | 60.0% | 67,494 |
|---|---|---|
| Kamala HarrisDemocratic | 37.9% | 42,600 |
| Robert F. Kennedy Jr.Independent | 2.1% | 2,404 |
County-level results (7 counties) — table
| County | Winner | Margin |
|---|---|---|
| Boone County, IL | Republican | R+14.5 |
| Carroll County, IL | Republican | R+31.7 |
| DeKalb County, IL | Democratic | D+2.0 |
| Jo Daviess County, IL | Republican | R+16.8 |
| Ogle County, IL | Republican | R+29.3 |
| Stephenson County, IL | Republican | R+19.4 |
| Winnebago County, IL | Democratic | D+0.6 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 37.9%Harris42,600 | 60.0%Trump67,494 | 2.1%Kennedy2,404 | 112,498 | ||
| R | 38.9%Biden44,838 | 58.9%Trump67,930 | 2.3%Jorgensen2,623 | 115,391 | ||
| R | 35.8%Clinton37,519 | 56.8%Trump59,545 | 7.5%Johnson7,819 | 104,883 | ||
| R | 45.7%Obama45,102 | 54.3%Romney53,509 | 0.0% | 98,611 | ||
| D | 49.4%Obama52,803 | 48.3%McCain51,623 | 2.3%Nader2,501 | 106,927 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | +1.1% |
| 2012 | −8.5% |
| 2016 | −21.0% |
| 2020 | −20.0% |
| 2024 | −22.1% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+52.3, this district sits far outside the statewide Democratic baseline, reflecting a largely rural or small-city electorate whose preferences diverge sharply from Chicago-area population centers.
Across the recorded series it reached a Democratic high of 1.1 points in 2008 and a Republican high of 22.1 points in 2024. Between 2020 and 2024 the district moved 2.1 points toward the Republican candidate; the 2024 margin was 22.1 points.
A population of 217,091, a 86% non-Hispanic-white share, and a median household income of $78,409 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 37 and State Senate District 35.
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 45th State Senate District. Akashic. https://akashic.app/sld-upper/17045/. Accessed May 20, 2026. License: CC BY 4.0.