Voting & Elections in San Marcos, TX
Presidential election results and party lean trends
County-level data: Election results are reported at the county level. San Marcos is located in Guadalupe County, TX. Results reflect all voters in the county, not just those in San Marcos.
Election Overview
Source: Guadalupe County (2024)2024 Winner
Republican
Dem Votes
29,573
34.8%
GOP Votes
54,691
64.3%
Total Votes
85,097
Margin
R+29.5%
Shift from 2020
R+5.4pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
R+29.5%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 29,573 | 54,691 | 85,097 | 34.8% | 64.3% | R+29.5 |
| 2020 | 28,805 | 47,553 | 77,592 | 37.1% | 61.3% | R+24.2 |
| 2016 | 18,308 | 36,495 | 57,220 | 32.0% | 63.8% | R+31.8 |
In the 2024 presidential election, Guadalupe County recorded 85,097 total votes. Republicans won the county with 64.3% of the vote compared to 34.8% for Democrats, a margin of R+29.5%. Compared to 2020, the margin shifted R+5.4pp from the previous election. Since 2016, Guadalupe County has shifted 2.3 percentage points toward Democrats.