Texas 18th State Senate District
Akashic| Donald Trump ✓Republican | 62.6% | 263,741 |
|---|---|---|
| Kamala HarrisDemocratic | 35.3% | 148,731 |
| Jill SteinGreen | 2.1% | 8,695 |
County-level results (19 counties) — table
| County | Winner | Margin |
|---|---|---|
| Aransas County, TX | Republican | R+55.7 |
| Austin County, TX | Republican | R+62.5 |
| Brazos County, TX | Republican | R+24.8 |
| Burleson County, TX | Republican | R+62.8 |
| Calhoun County, TX | Republican | R+52.1 |
| DeWitt County, TX | Republican | R+67.0 |
| Fayette County, TX | Republican | R+61.3 |
| Fort Bend County, TX | Democratic | D+1.6 |
| Goliad County, TX | Republican | R+60.2 |
| Gonzales County, TX | Republican | R+54.7 |
| Grimes County, TX | Republican | R+60.2 |
| Harris County, TX | Democratic | D+5.5 |
| Lavaca County, TX | Republican | R+76.0 |
| Lee County, TX | Republican | R+60.3 |
| Montgomery County, TX | Republican | R+45.5 |
| Refugio County, TX | Republican | R+39.5 |
| Victoria County, TX | Republican | R+42.5 |
| Waller County, TX | Republican | R+25.0 |
| Washington County, TX | Republican | R+54.5 |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 35.3%Harris148,731 | 62.6%Trump263,741 | 2.1%Stein8,695 | 421,167 | ||
| R | 39.9%Biden158,129 | 59.2%Trump234,464 | 0.9%Jorgensen3,396 | 395,989 | ||
| R | 36.7%Clinton110,433 | 59.9%Trump180,296 | 3.4%Johnson10,374 | 301,103 | ||
| R | 35.1%Obama88,652 | 64.9%Romney163,730 | 0.0% | 252,382 | ||
| R | 37.5%Obama96,773 | 61.5%McCain158,553 | 0.9%Barr2,412 | 257,738 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −24.0% |
| 2012 | −29.7% |
| 2016 | −23.2% |
| 2020 | −19.3% |
| 2024 | −27.3% |
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+65.3 across a population of nearly 950,000, this West Texas district ranks among the most reliably one-sided state senate seats in the country, leaving general-election competition largely absent.
Across the recorded series it reached a Republican high of 29.7 points in 2012. Between 2020 and 2024 the district moved 8.0 points toward the Republican candidate; the 2024 margin was 27.3 points.
A population of 945,180, a 47% non-Hispanic-white share, and a median household income of $86,737 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 17 and State Senate District 2.
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 →
Texas 18th State Senate District. Akashic. https://akashic.app/sld-upper/48018/. Accessed May 20, 2026. License: CC BY 4.0.