Texas Senate District 21
State Senate District 21
Covers all of Webb County, Duval County, La Salle County, Dimmit County, Starr County, McMullen County, Jim Hogg County, Live Oak County, Zapata County, Wilson County, Karnes County and Caldwell County; parts of Guadalupe County, Hays County and Travis County.
Who Holds This Seat
Running in 2026
Democrat · State Senator
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Oct 9
- Raised
- Not on file
- Cash on Hand
- Not on file
No finance filing on record.
Republican
- Ballot
- On the 2026 ballot
- Last Change
- Profile updated · Oct 9
- Raised
- Not on file
- Cash on Hand
- Not on file
No finance filing on record.
The District
Includes Laredo, Kyle, San Marcos, Garfield, La Moca Ranch, Lockhart, Rio Grande City, Zapata, Aguilares, Airport Heights, Alto Bonito Heights, Amada Acres and 201 more.
320 precincts · District lines: State legislative lines: U.S. Census Bureau TIGER/Line 2024 (SLDU/SLDL) · Precinct lines: Texas Legislative Council, VTDs_24PG statewide precinct (VTD) shapefile for the 2024 primary and general elections (data.capitol.texas.gov/dataset/vtds); 2020 elections in Calhoun, Lavaca, Kleberg, Bee, Maverick and McMullen: U.S. Census Bureau 2020 voting districts; U.S. Census Bureau 2020 voting districts for the 2020 general
Results in This District
| Contest | First | Second | Margin | Votes | Source |
|---|---|---|---|---|---|
| 2024 President310 precinctsTexas Legislative Council, Capitol Data PortalOfficial canvass returns | Harris (D)159,874 · 50.8% | Trump (R)150,551 · 47.9% | D+3.0 | 314,545 | Texas Legislative Council, Capitol Data PortalOfficial canvass returns |
| 2024 U.S. Senate310 precinctsTexas Legislative Council, Capitol Data PortalOfficial canvass returns | Allred (D)165,778 · 54.1% | Cruz (R)132,083 · 43.1% | D+11.0 | 306,411 | Texas Legislative Council, Capitol Data PortalOfficial canvass returns |
| 2022 Governor309 precinctsTexas Legislative Council, Capitol Data PortalOfficial canvass returns | O'Rourke (D)125,630 · 57.4% | Abbott (R)89,151 · 40.8% | D+16.7 | 218,734 | Texas Legislative Council, Capitol Data PortalOfficial canvass returns |
| 2020 President289 precinctsTexas Legislative Council, Capitol Data PortalOfficial canvass returns | Biden (D)167,509 · 57.3% | Trump (R)120,249 · 41.1% | D+16.2 | 292,472 | Texas Legislative Council, Capitol Data PortalOfficial canvass returns |
| 2020 U.S. Senate289 precinctsTexas Legislative Council, Capitol Data PortalOfficial canvass returns | Hegar (D)158,844 · 56.2% | Cornyn (R)114,186 · 40.4% | D+15.8 | 282,640 | Texas Legislative Council, Capitol Data PortalOfficial canvass returns |
Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.
Past Results
State Sen 21
2022 General Election · Nov 8, 2022| Candidate | Party | Votes | Share |
|---|---|---|---|
| ZaffiriniDemocrat | Democrat | 129,942 | 61.6% |
| DahlbergRepublican | Republican | 75,818 | 35.9% |
| DiBiancaLibertarian | Libertarian | 5,285 | 2.5% |
Official canvass returns (Texas Secretary of State), compiled by the Texas Legislative Council and reported by 2022 general election VTDs · Texas Legislative Council, Capitol Data Portal — Comprehensive Election Datasets
State Sen 21
2020 General Election · Nov 3, 2020| Candidate | Party | Votes | Share |
|---|---|---|---|
| ZaffiriniDemocrat | Democrat | 167,669 | 60.1% |
| PomeroyRepublican | Republican | 111,129 | 39.9% |
Official canvass returns (Texas Secretary of State), compiled by the Texas Legislative Council and reported by 2020 general election VTDs · Texas Legislative Council, Capitol Data Portal — Comprehensive Election Datasets