Missouri 18th State Senate District
Akashic| Donald Trump ✓Republican | 76.4% | 62,694 |
|---|---|---|
| Kamala HarrisDemocratic | 22.6% | 18,517 |
| Chase OliverLibertarian | 1.0% | 860 |
County-level results (14 counties) — table
| County | Winner | Margin |
|---|---|---|
| Adair County, MO | Republican | R+33.4 |
| Audrain County, MO | Republican | R+47.6 |
| Clark County, MO | Republican | R+61.5 |
| Knox County, MO | Republican | R+64.5 |
| Lewis County, MO | Republican | R+60.0 |
| Macon County, MO | Republican | R+61.5 |
| Marion County, MO | Republican | R+52.9 |
| Monroe County, MO | Republican | R+59.8 |
| Putnam County, MO | Republican | R+70.3 |
| Ralls County, MO | Republican | R+59.2 |
| Randolph County, MO | Republican | R+52.1 |
| Schuyler County, MO | Republican | R+64.5 |
| Scotland County, MO | Republican | R+61.4 |
| Shelby County, MO | Republican | R+65.6 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 22.6%Harris18,517 | 76.4%Trump62,694 | 1.0%Oliver860 | 82,071 | ||
| R | 23.8%Biden19,620 | 74.6%Trump61,588 | 1.7%Jorgensen1,400 | 82,608 | ||
| R | 23.4%Clinton18,601 | 72.4%Trump57,593 | 4.2%Johnson3,380 | 79,574 | ||
| R | 35.1%Obama26,221 | 64.9%Romney48,494 | 0.0% | 74,715 | ||
| R | 39.5%Obama32,927 | 57.6%McCain48,057 | 2.9%Nader2,396 | 83,380 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −18.1% |
| 2012 | −29.8% |
| 2016 | −49.0% |
| 2020 | −50.8% |
| 2024 | −53.8% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of D+21, Missouri Senate District 18 sits well outside the statewide competitive range. Its urban core drives consistent Democratic performance in a state that has otherwise shifted sharply rightward over the past decade.
Across the recorded series it reached a Republican high of 53.8 points in 2024. Between 2020 and 2024 the district moved 3.0 points toward the Republican candidate; the 2024 margin was 53.8 points.
A population of 177,682, a 90% non-Hispanic-white share, and a median household income of $60,214 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 12 and State Senate District 28.
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
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Missouri 18th State Senate District. Akashic. https://akashic.app/sld-upper/29018/. Accessed May 20, 2026. License: CC BY 4.0.