San Marcos, Texas
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | +2.7% |
| 2008 | +15.9% |
| 2012 | +15.1% |
| 2016 | +26.1% |
| 2020 | +38.5% |
| 2024 | +29.2% |
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| D | 63.7%Harris17,582 | 34.6%Trump9,536 | 1.7% | D+29.2 | R+9.4 | D+30.6 | 27,588 | |
| D | 68.4%Biden17,174 | 29.9%Trump7,508 | 1.6% | D+38.5 | D+12.4 | D+34.1 | 25,096 | |
| D | 58.6%Clinton10,176 | 32.5%Trump5,638 | 8.9% | D+26.1 | D+11.0 | D+24.1 | 17,357 | |
| D | 56.0%Obama8,185 | 40.9%Romney5,973 | 3.1% | D+15.1 | R+0.8 | D+11.3 | 14,607 | |
| D | 57.7%Obama10,058 | 41.8%McCain7,283 | 0.5% | D+15.9 | D+13.2 | D+8.7 | 17,424 | |
| D | 50.8%Kerry7,204 | 48.0%Bush6,816 | 1.2% | D+2.7 | — | D+5.2 | 14,191 |
Home to Texas State University, San Marcos sits between Austin and San Antonio on the I-35 corridor, where rapid population growth and a large enrolled student body consistently complicate turnout modeling for both local and statewide races.
Across the recorded series it reached a Democratic high of 38.5 points in 2020. Between 2020 and 2024 the city moved 9.4 points toward the Republican candidate; the 2024 margin was 29.2 points.
A population of 70,897, a 45% non-Hispanic-white share, and a median household income of $51,281 describe the city. The city's voting pattern over the last decade is most similar to that of Harrisonburg and Chico.
The cities 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.
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San Marcos, Texas. Akashic. https://akashic.app/city/4865600/. Accessed May 20, 2026. License: CC BY 4.0.