Indiana 18th State Senate District
Akashic| Donald Trump ✓Republican | 75.6% | 42,850 |
|---|---|---|
| Kamala HarrisDemocratic | 22.7% | 12,893 |
| Robert F. Kennedy Jr.We The People | 1.7% | 938 |
County-level results (5 counties) — table
| County | Winner | Margin |
|---|---|---|
| Cass County, IN | Republican | R+46.2 |
| Fulton County, IN | Republican | R+51.1 |
| Howard County, IN | Republican | R+35.2 |
| Kosciusko County, IN | Republican | R+52.0 |
| Miami County, IN | Republican | R+54.5 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 22.7%Harris12,893 | 75.6%Trump42,850 | 1.7%Kennedy938 | 56,681 | ||
| R | 24.0%Biden14,083 | 73.9%Trump43,365 | 2.1%Jorgensen1,260 | 58,708 | ||
| R | 21.7%Clinton11,933 | 72.5%Trump39,800 | 5.8%Johnson3,176 | 54,909 | ||
| R | 32.6%Obama16,725 | 67.4%Romney34,548 | 0.0% | 51,273 | ||
| R | 38.6%Obama22,148 | 59.0%McCain33,822 | 2.3%Barr1,338 | 57,308 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −20.4% |
| 2012 | −34.8% |
| 2016 | −50.8% |
| 2020 | −49.9% |
| 2024 | −52.9% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+53.9, this district ranks among the most heavily one-sided in the state, reflecting a rural and small-city electorate that has moved decisively away from statewide competitiveness.
Across the recorded series it reached a Republican high of 52.9 points in 2024. Between 2020 and 2024 the district moved 3.0 points toward the Republican candidate; the 2024 margin was 52.9 points.
A population of 133,344, a 87% non-Hispanic-white share, and a median household income of $66,645 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 39 and State Senate District 17.
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 →
Indiana 18th State Senate District. Akashic. https://akashic.app/sld-upper/18018/. Accessed May 20, 2026. License: CC BY 4.0.