San Antonio · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1912–2024 · 29 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
84.6%
79,278 votes · D+69.7
Runner-up · Franklin D. Roosevelt, 1936 · 74.6%
Republican
Richard Nixon1972
62.4%
203,536 votes · R+25.3
Runner-up · Ronald Reagan, 1984 · 61.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
571,782votes
49.0% of the vote · R+0.4
Runner-up · Kamala Harris, 2024 · 530,491 votes
Republican
Donald Trump2024
639,150votes
54.0% of the vote · R+9.2
Runner-up · Donald Trump, 2020 · 576,636 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Franklin D. Roosevelt1932
+51.9pts D vs U.S.
Place D+69.7 · U.S. D+17.8
Runner-up · John W. Davis, 1924 · +46.0 pts
Republican
George W. Bush2004
+17.8pts R vs U.S.
Place R+20.3 · U.S. R+2.5
Runner-up · George W. Bush, 2000 · +16.6 pts
presidential primaries
Nominating contests
San Antonio · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in San Antonio, by party and cycle.
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Where a cell reads All others, no named candidate led — the source’s residual bucket did. That bucket holds every name past the ones the contest itemises, including candidates who had withdrawn but still drew votes. It is a total, not a person, so it carries no candidate colour.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
voter registration
Registered voters
Total registered voters, over time
Registered voters
† Some years predate full county coverage; a flagged year sums only the counties reporting it.
Voter registration in San Antonio
Year
Total registered
2016 (partial)
1,523,184
2018 (partial)
1,622,129
2020
1,771,159
2022
1,845,521
2024
1,950,034
domestic migration
Who moves in and out
Net domestic migration over time
+17,966 net domestic migration · 2025
20112025
Net +334,804 over 2011–2025 · gain loss
Domestic migration in San Antonio in San Antonio: net domestic migration by year
Year
Net domestic migration
2011
+20,186
2012
+20,428
2013
+22,565
2014
+25,413
2015
+26,442
2016
+22,803
2017
+23,365
2018
+21,838
2019
+21,056
2021
+28,582
2022
+35,965
2023
+29,811
2024
+18,384
2025
+17,966
The San Antonio media market anchors South Texas, where Hispanic voters make up the largest share of the electorate and shifts in their turnout patterns have repeatedly reshaped statewide margin calculations.
Across the recorded series it reached a Democratic high of 69.7 points in 1932 and a Republican high of 25.3 points in 1972. Between 2020 and 2024 the market moved 8.8 points toward the Republican candidate; the 2024 margin was 9.2 points.
A population of 2,980,616, a 32% non-Hispanic-white share, and a median household income of $75,199 describe the market. The market's voting pattern over the last decade is most similar to that of Fresno-Visalia and Bakersfield.
Akashic
Political twins — media markets
The media markets 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 →
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San Antonio, Texas. Akashic. https://akashic.app/dma/641/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, San Antonio, Texas voted Republican by 9.2 points (R+9.2), carried by the Republican candidate. Out of 1,182,702 votes cast, 530,491 went Democratic and 639,150 went Republican.
When did San Antonio, Texas last vote Democratic?
The most recent presidential election in which San Antonio, Texas voted Democratic was 1976.
How many people live in San Antonio, Texas?
San Antonio, Texas has a population of 2,980,616 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in San Antonio, Texas?
Median household income in San Antonio, Texas is $75,199 — below the national median of $80,734. The Texas state median is $78,476.
What is the political history of San Antonio, Texas?
Akashic tracks 34 presidential elections in San Antonio, Texas from 1892 to 2024. Of those, 13 went Democratic and 16 went Republican.