Texas's 20th congressional district of the United States House of Representatives includes the western half of San Antonio and Bexar County in Texas. The district is heavily Latino/Hispanic (predominantly of Mexican descent), as is the surrounding area. Charlie Gonzalez, who represented the district from 1999 to 2013 after succeeding his father, Henry B. González, did not seek re-election in the 2012 United States House of Representatives elections. State representative Joaquin Castro, the Democratic nominee to replace Gonzalez, defeated David Rosa, the Republican nominee, in the race for Texas's 20th district on November 6, 2012. His term began on January 3, 2013.

The 20th district is heavily Democratic. It has never sent a Republican to Congress, and has not supported a Republican for president since 1956. In 1972, this was one of two congressional districts in the state of Texas to vote for George McGovern (the other being the 18th district in Houston). In 1984, this district gave Walter Mondale 59% of its vote.

Recent election results from statewide races 2023–2027 boundaries Year Office Results2008 PresidentObama 62% - 38%2012 PresidentObama 63% - 37%2014 SenateAlameel 55% - 45% GovernorDavis 60% - 40%2016 PresidentClinton 63% - 31%2018 SenateO'Rourke 69% - 30% GovernorValdez 62% - 36% Lt. GovernorCollier 65% - 33% Attorney GeneralNelson 67% - 30% Comptroller of Public AccountsChevalier 64% - 31%2020 PresidentBiden 66% - 33% SenateHegar 62% - 34%2022 GovernorO'Rourke 66% - 32% Lt. GovernorCollier 63% - 33% Attorney GeneralMercedes Garza 65% - 32% Comptroller of Public AccountsDudding 62% - 33%2024 PresidentHarris 60% - 39% SenateAllred 63% - 34%

2027–2033 boundaries Year Office Results2008 PresidentObama 66% - 33%2012 PresidentObama 69% - 31%2014 SenateAlameel 61% - 39% GovernorDavis 66% - 34%2016 PresidentClinton 67% - 27%2018 SenateO'Rourke 73% - 26% GovernorValdez 66% - 32% Lt. GovernorCollier 69% - 29% Attorney GeneralNelson 71% - 26% Comptroller of Public AccountsChevalier 68% - 28%2020 PresidentBiden 69% - 29% SenateHegar 66% - 31%2022 GovernorO'Rourke 70% - 29% Lt. GovernorCollier 67% - 29% Attorney GeneralMercedes Garza 69% - 28% Comptroller of Public AccountsDudding 66% - 30%2024 PresidentHarris 63% - 35% SenateAllred 67% - 31%

Composition For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties and communities:https://www2.census.gov/geo/maps/cong_dist/cd118/cd_based/ST48/CD118_TX20.pdf

Bexar County (3)

Balcones Heights, Leon Valley, San Antonio (part; also 21st, 23rd, 28th, 35th; shared with Comal and Medina counties)

List of members representing the district Member Party Years Congress Electoral history District established January 3, 1935 Maury Maverick Democratic January 3, 1935 –January 3, 1939 Elected in 1934.Re-elected in 1936.Lost renomination. Paul J. Kilday DemocraticJanuary 3, 1939 –September 24, 1961 Elected in 1938.Re-elected in 1940.Re-elected in 1942.Re-elected in 1944.Re-elected in 1946.Re-elected in 1948.Re-elected in 1950.Re-elected in 1952.Re-elected in 1954.Re-elected in 1956.Re-elected in 1958.Re-elected in 1960 Resigned to become Judge of the U.S. Court of Appeals for the Armed Forces. Vacant September 24, 1961 –November 4, 1961 Henry B. González Democratic November 4, 1961 –January 3, 1999 Elected to finish Kilday's term.Re-elected in 1960.Re-elected in 1962.Re-elected in 1964.Re-elected in 1966.Re-elected in 1968.Re-elected in 1970.Re-elected in 1972.Re-elected in 1974.Re-elected in 1976.Re-elected in 1978.Re-elected in 1980.Re-elected in 1982.Re-elected in 1984.Re-elected in 1986.Re-elected in 1988.Re-elected in 1990.Re-elected in 1992.Re-elected in 1994.Re-elected in 1996.Retired. Charlie Gonzalez Democratic January 3, 1999 –January 3, 2013 Elected in 1998.Re-elected in 2000.Re-elected in 2002.Re-elected in 2004.Re-elected in 2006.Re-elected in 2008.Re-elected in 2010.Retired. Joaquin Castro Democratic January 3, 2013 –present Elected in 2012.Re-elected in 2014.Re-elected in 2016.Re-elected in 2018.Re-elected in 2020.Re-elected in 2022.Re-elected in 2024.

Selected recent election results

2006 election

2012 election Democratic challenger Joaquin Castro defeated Republican challenger David Rosa in the race for Texas's 20th district on November 6, 2012. Prior to being elected, Castro served as a state representative of the Texas House from the state's 125th District.

2014 election Democratic incumbent Joaquin Castro defeated Libertarian challenger Jeffrey Blunt in the race for Texas's 20th district on November 4, 2014.

2016 election Democratic incumbent Joaquin Castro defeated Libertarian challenger Jeffrey Blunt and Green Party challenger Paul Pipkin in the race for Texas's 20th district on November 8, 2016.

2018 election Democratic incumbent Joaquin Castro defeated Libertarian challenger Jeffrey Blunt in the race for Texas's 20th district on November 6, 2018

2020 election

2022 election

2024 election

Historical district boundaries

See also List of United States congressional districts

References

Congressional Biographical Directory of the United States 1774–present