House districts / Texas
Texas's 20th congressional district
TX-20. Redrawn for 2026: the November 2026 election is on new lines. The outline shows the 2024 district with the same number.
Fundraising
- Joaquin Castro Das of Oct 14, 2026Raised $592kSpent $602k · Cash $129k
- Edgardo Rafael Baez Ras of Oct 14, 2026Raised $69kSpent $61k · Cash $9k
1 other 2026 candidate filed reports (primary candidate). 2 other candidates have not filed.
Federal Election Commission, candidate totals, public domain.
President in this district
PollCheck calculation from precinct returns on the 2026 lines (method).
| Year | Democrat | Republican | Other | Margin | 2024 lines |
|---|---|---|---|---|---|
| 2024 | Harris 63.5% | Trump 35.0% | 1.5% | D+28.4 | D+21.2 |
| 2020 | Biden 69.3% | Trump 29.1% | 1.6% | D+40.2 | D+33.1 |
| 2016 | Clinton 67.3% | Trump 27.2% | 5.5% | D+40.2 | D+31.9 |
Who lives here
| Measure | This district | US |
|---|---|---|
| People | ||
| Population | 766,987 | |
| Adults (18+) | 577,537 | |
| Citizens, % of adults* | 88.2% | 92.1% |
| Age, % of adults | ||
| 18 to 29* | 24.3% | 20.3% |
| 30 to 44* | 30.4% | 25.9% |
| 45 to 64* | 29.0% | 31.8% |
| 65 and over* | 16.3% | 22.0% |
| Race and Hispanic origin, % of residents | ||
| White | 16.1% | 57.8% |
| Black | 9.0% | 12.1% |
| Hispanic | 69.3% | 18.7% |
| Asian | 2.8% | 5.9% |
| Other or more than one | 2.8% | 5.5% |
| Education and income | ||
| Bachelor's degree or higher, % of 25+* | 21.6% | 35.7% |
| Median household income* | $57,126 | $80,734 |
* Estimated for the 2026 lines from census blocks (ACS 2020-2024). Population, adults and race: 2020 Census, counted on the 2026 lines. The tick marks the US figure.
Winning margin
Results since 1976
| Year | Winner | Share | Runner-up | Share | Margin |
|---|---|---|---|---|---|
| 2024 lines, elections 2022-2024: redrawn for 2026 seat count changed from 36 to 38 after the census | |||||
| 2024 | Joaquin Castro Democrat | 100.0% | D+100.0 | ||
| 2022 | Joaquin Castro Democrat | 68.4% | Kyle Sinclair Republican | 31.6% | D+36.9 |
| Earlier lines, elections 2012-2020 seat count changed from 32 to 36 after the census | |||||
| 2020 | Joaquin Castro Democrat | 64.7% | Mauro Garza Republican others 2.2% | 33.1% | D+31.6 |
| 2018 | Joaquin Castro Democrat | 80.8% | Jeffrey Blunt Libertarian | 19.1% | D+61.7 |
| 2016 | Joaquin Castro Democrat | 79.7% | Jeffrey C. Blunt Libertarian others 4.8% | 15.5% | D+64.3 |
| 2014 | Joaquin Castro Democrat | 75.7% | Jeffrey C. Blunt Libertarian | 24.3% | D+51.3 |
| 2012 | Joaquin Castro Democrat | 63.9% | David Rosa Republican others 2.6% | 33.5% | D+30.4 |
| Earlier lines, elections 2006-2010 LULAC v. Perry (2006): court-drawn lines for five districts | |||||
| 2010 | Charles A. Gonzalez Democrat | 63.6% | Clayton Trotter Republican others 1.9% | 34.5% | D+29.2 |
| 2008 | Charles A. Gonzalez Democrat | 71.9% | Robert Litoff Republican others 2.9% | 25.2% | D+46.7 |
| 2006 | Charles A. Gonzalez Democrat | 87.3% | Michael Idrogo Libertarian | 12.7% | D+74.7 |
| Earlier lines, elections 2004 Texas Legislature's 2003 mid-decade map | |||||
| 2004 | Charles A. Gonzalez Democrat | 65.5% | Roger Scott Republican others 2.5% | 32.0% | D+33.5 |
| Earlier lines, elections 2002 seat count changed from 30 to 32 after the census | |||||
| 2002 | Charles A. Gonzalez Democrat | 100.0% | D+100.0 | ||
| Earlier lines, elections 1996-2000 Bush v. Vera (1996): 13 districts redrawn by the court, with special elections that November | |||||
| 2000 | Charles A. Gonzalez Democrat | 87.7% | Alejandro (Alex) De Pena Libertarian | 12.3% | D+75.4 |
| 1998 | Charlie Gonzalez Democrat | 63.2% | James Walker Republican others 1.3% | 35.6% | D+27.6 |
| 1996 | Henry B. Gonzalez Democrat | 63.7% | James Walker Republican others 1.9% | 34.4% | D+29.3 |
| Earlier lines, elections 1992-1994 seat count changed from 27 to 30 after the census | |||||
| 1994 | Henry B. Gonzalez Democrat | 62.5% | Carl Bill Colyer Republican | 37.5% | D+25.0 |
| 1992 | Henry B. Gonzalez Democrat | 100.0% | D+100.0 | ||
| Earlier lines, elections 1982-1990 seat count changed from 24 to 27 after the census | |||||
| 1990 | Henry B. Gonzalez Democrat | 100.0% | D+100.0 | ||
| 1988 | Henry B. Gonzalez Democrat | 70.7% | Lee Travino Republican others 1.8% | 27.5% | D+43.2 |
| 1986 | Henry B. Gonzalez Democrat | 100.0% | D+100.0 | ||
| 1984 | Henry B. Gonzales Democrat | 100.0% | D+100.0 | ||
| 1982 | Henry B. Gonzales Democrat | 91.5% | Roger V. Gary Libertarian others 3.0% | 5.6% | D+85.9 |
| Earlier lines, elections 1976-1980 | |||||
| 1980 | Henry B. Gonzalez Democrat | 81.9% | Merle Nash Republican others 0.8% | 17.3% | D+64.7 |
| 1978 | Henry B. Gonzalez Democrat | 100.0% | D+100.0 | ||
| 1976 | Henry B. Gonzalez Democrat | 100.0% | D+100.0 | ||
More on Texas
Other Texas districts
About these results
Shares count all candidate votes, including write-ins, with a candidate's votes on several party lines added together. Each result is on the lines in force at the time. Mid-decade redraws before 2016 may be unmarked.
President in this district: 2024 on the new lines is the official figure published by the state. 2016 and 2020 are estimates: precinct votes are split between districts by census block. The last column is the margin in TX-20 on the 2024 lines.
Counties only partly inside the district show the 2024 result for that part; estimates are labelled.
Margin chart: winner minus runner-up. Gaps are unopposed races; dashed lines are new district lines.
Who lives here (2026 lines) is estimated from Census survey figures split by population.
Sources
Results: MIT Election Data and Science Lab, U.S. House 1976-2016 (doi:10.7910/DVN/IG0UN2, CC0; via MEDSL/constituency-returns), and Clerk of the US House, Statistics of the Presidential and Congressional Election 2018-2024 (public domain).
Presidential results: PollCheck calculation from MIT Election Data and Science Lab 2024 precinct returns (doi:10.7910/DVN/XDJYKC, doi:10.7910/DVN/USBYR4, CC0; state totals doi:10.7910/DVN/42MVDX, CC0) and Voting and Election Science Team 2016 and 2020 precinct results and shapes (doi:10.7910/DVN/NH5S2I, doi:10.7910/DVN/K7760H, CC BY 4.0), with US Census Bureau 2020 block populations and block equivalency files (public domain). Official figures: Texas Legislative Council (2024 on the 2026 lines); Louisiana, New Jersey, California and Washington election offices (county totals). Certified results transcribed by Wikipedia (CC BY-SA 4.0): Maine 2024 by district: 2024 United States presidential election in Maine (revision 1382530995); Indiana county totals: 2024 United States presidential election in Indiana (revision 1382505975); Oregon county totals: 2024 United States presidential election in Oregon (revision 1382605746).
District lines: US Census Bureau TIGER/Line 2026 (120th Congress) and 2025 cartographic boundary files (119th Congress), public domain.
Members: unitedstates/congress-legislators (CC0).
Counties: US Census Bureau 2024 cartographic boundary file (public domain); 2024 county results summed from the same MEDSL precinct returns, with the official county totals above.
Demographics: US Census Bureau, American Community Survey 5-year estimates 2020-2024; 2020 Census P.L. 94-171 (public domain).
2028 candidates: Federal Election Commission (public domain).
Photos: official portraits, public domain (US government); see Photo credits.
PollCheck US. Data through November 5, 2026. Photo credits