The 3rd 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, elected in the 2024 general election, is Theodoros Kalionchiz de la Fuente of the National Action Party (PAN).

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 3rd district comprises 268 electoral precincts () across 13 municipalities in the central-eastern portion of the state: Abasolo, Allende, Candela, Castaños, Escobedo, Guerrero, Hidalgo, Juárez, Monclova, Progreso, Sabinas, San Juan de Sabinas and Villa Unión.

The district's head town (), where results from individual polling stations are gathered together and tallied, is the city of Monclova. The district reported a population of 417,078 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 12 municipalities: Abasolo, Allende, Candela, Escobedo, Frontera, Guerrero, Hidalgo, Juárez, Monclova, Progreso, Sabinas and Villa Unión. The head town was at Monclova.

2005–2017 Between 2005 and 2017, the district was located in the central-eastern portion of the state and covered 12 municipalities: Abasolo, Arteaga, Candela, Castaños, Escobedo, General Cepeda, Juárez, Monclova, Progreso, Ramos Arizpe, Sabinas and Sacramento. The head town was the city of Monclova. The link contains comparative maps of the 1996 and 2005 schemes.

1996–2005 Between 1996 and 2005, the district's territory was in the north and north-east region of the state and covered 10 municipalities: Abasolo, Candela, Castaños, Escobedo, Juárez, Monclova, Progreso, Sabinas, San Buenaventura and San Juan de Sabinas. The head town was at Monclova.

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 3rd district had its head town at Monclova and it comprised the municipalities of Abasolo, Allende, Candela, Escobedo, Guerrero, Hidalgo, Juárez, Monclova, Nadadores, Progreso, San Buenaventura and Villa Unión. The link contains an exact description of the area covered.

Deputies returned to Congress

+ Coahuila's 3rd district Election Deputy Party Term Legislature 1916–1917Constituent Congressof Querétaro 1917Aarón Sáenz PLC 1917–191827th Congress 1918 1918–192028th Congress 1920Francisco Guerrero V. 1920–192229th Congress Otilio González 1922–192430th Congress 1924Candor Guajardo 1924–192631st Congress 1926Manuel Mijares V. PLN 1926–192832nd Congress 1928 Manuel Mijares V. PLN 1928–193033rd Congress 1930Alfredo I. Moreno 1930–193234th Congress 1932Francisco Saracho 1932–193435th Congress 1934Delfín Cepeda 1934–1937 36th Congress 1937Damián L. Rodríguez 1937–194037th Congress 1940Arturo Carranza 1940–1943 38th Congress 1943 1943–1946 39th Congress 1946José de Jesús Urquizo 1946–1949 40th Congress 1949Fernando Vargas Meza 1949–1952 41st Congress 1952Antonio Marmolejo Barrera 1952–1955 42nd Congress 1955Jesús Rodríguez Silva 1955–1958 43rd Congress 1958Pablo Orozco Escobar 1958–1961 44th Congress 1961Félix de la Rosa Sánchez 1961–1964 45th Congress 1964Francisco Padilla Rodríguez 1964–1967 46th Congress 1967Juan Manuel Berlanga García 1967–1970 47th Congress 1970Aureliano Cruz Juárez 1970–1973 48th Congress 1973Arnoldo Villarreal Zertuche 1973–1976 49th Congress 1976Fernando Cabrera Rodríguez 1976–1979 50th Congress 1979Rafael Ibarra Chacón 1979–1982 51st Congress 1982Enrique Neavez Muñiz 1982–1985 52nd Congress 1985Daniel Castaño de la Fuente 1985–1988 53rd Congress 1988Benigno Gil de los Santos 1988–1991 54th Congress 1991Fidel Hernández Puente 1991–1994 55th Congress 1994Miguel Ángel García García 1994–1997 56th Congress 1997Martha Laura Carranza Aguayo 1997–2000 57th Congress 2000Óscar Maldonado Domínguez 2000–2003 58th Congress 2003Ricardo Rodríguez Rocha 2003–2006 59th Congress 2006Rolando Rivero Rivero 2006–2009 60th Congress 2009Melchor Sánchez de la Fuente 2009–2012 61st Congress 2012Mario Alberto Dávila Delgado 2012–2015 62nd Congress 2015María Guadalupe Oyervides Valdez 2015–2018 63rd Congress 2018 2018–2021 64th Congress 2021 2021–2024 65th Congress 2024Theodoros Kalionchiz de la Fuente2024–2027 66th Congress

Presidential elections + Coahuila's 3rd district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 47.53752024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 51.7470

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