The 1st federal electoral district of Coahuila () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of eight such districts in the state of Coahuila.
It elects one deputy to the lower house of Congress for each three-year legislative session by means of the first past the post system. Votes cast in the district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the second region.
The current member for the district, re-elected in the 2024 general election, is Brígido Ramiro Moreno Hernández of the Labour Party (PT).
District territory In its 2023 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, the National Electoral Institute (INE) assigned Coahuila an additional district. The reconfigured 1st district comprises 206 electoral precincts () across six municipalities in the state's extreme north: Acuña, Jiménez, Morelos, Nava, Piedras Negras and Zaragoza.
The head town (), where results from individual polling stations are gathered together and tallied, is the city of Piedras Negras. The district reported a population of 403,123 in the 2020 census.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 Coahuila 4 7 7 7 7 8 Chamber of Deputies 196 300Sources:
2017–2022 Between 2017 and 2022, the district covered seven of the state's northern municipalities: the six included in the 2023 plan, plus San Juan de Sabinas. The head town was at Piedras Negras.
2005–2017 Under the 2005 districting scheme, the district covered 10 northern municipalities: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, Piedras Negras, Villa Unión and Zaragoza. The head town was the city of Piedras Negras. The link contains comparative maps of the 1996 and 2005 schemes.
1996–2005 Between 1996 and 2005, the 1st district's territory was in the north and north-east region of the state and covered 11 municipalities: Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Múzquiz, Nava, Piedras Negras, Villa Unión and Zaragoza. The head town was at Piedras Negras.
1978–1996 The districting scheme in force from 1978 to 1996 was the result of the 1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300. Under that plan, Coahuila's seat allocation rose from 4 to 7. The 1st district had its head town at Saltillo and it covered that city. The link contains an exact description of the area covered.
Deputies returned to Congress
+ Coahuila's 1st district Election Deputy Party Term Legislature1916–1917Constituent Congressof Querétaro1917Serapio AguirrePLC1917–191827th Congress1918Ernesto Meade Fierro1918–192028th Congress19201920–192229th CongressLorenzo Dávila1922–192430th Congress1924Jacobo Cárdenas1924–192631st Congress1926Juan L. Morales1926–192832nd Congress1928Rómulo Moreira1928–193033rd Congress1930Ricardo Ainslie R.1930–193234th Congress 1932Ricardo Ainslie R.1932–193435th Congress1934Jesús Govea T.1934–193736th Congress1937Tomás Garza Felán1937–194037th Congress1940Pedro Cerda1940–194338th Congress19431943–194639th Congress19461946–194940th Congress1949Evelio González Treviño1949–195241st Congress1952Rafael Carranza Hernández1952–195542nd Congress1955Carlos Valdés Villarreal1955–195843rd Congress1958Florencio Barrera Fuentes1958–196144th Congress1961Salvador González Lobo1961–196445th Congress1964Tomás Algaba Gómez1964–196746th Congress1967José de las Fuentes Rodríguez1967–197047th Congress1970Gustavo Guerra Castaños1970–197348th Congress1973Jesús Roberto Dávila Narro1973–197649th Congress1976José de las Fuentes Rodríguez1976–197950th Congress1979Jorge Masso Masso1979–198251st Congress1982Abraham Cepeda Izaguirre1982–198552nd Congress1985Eliseo Mendoza BerruetoHilda Aurelia Lozano Flores1985–19871987–198853rd Congress1988Enrique Martínez y Martínez1988–199154th Congress1991Óscar Pimentel González1991–199455th Congress1994Alejandro Gutiérrez Gutiérrez1994–199756th Congress1997Francisco García Castells1997–200057th Congress2000Claudio Bres GarzaArmín Valdés Torres2000–20022002–200358th Congress2003Jesús María Ramón Valdés2003–200659th Congress2006Ángel Humberto García Reyes2006–200960th Congress2009Francisco Saracho Navarro2009–201261st Congress2012Irma Elizondo RamírezMaría de Lourdes Flores Treviño2012–20142014–201562nd Congress2015Francisco Saracho Navarro2015–201863rd Congress2018 2018–202164th Congress2021Brígido Ramiro Moreno Hernández2021–202465th Congress2024Brígido Ramiro Moreno Hernández2024–202766th Congress
Presidential elections + Coahuila's 1st district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 46.60032024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 56.4507
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