The 12th federal electoral district of Mexico City (; previously "of the Federal District") is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 22 such districts in Mexico City.
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 fourth region.
The current member for the district, elected in the 2024 general election, is Mónica Elizabeth Sandoval Hernández. Originally elected for the Party of the Democratic Revolution (PRD), she switched allegiance to the Institutional Revolutionary Party (PRI) after the PRD lost its registration as a national party in the aftermath of the election.
District territory Under the 2023 districting plan adopted by the National Electoral Institute (INE), which is to be used for the 2024, 2027 and 2030 federal elections, the 12th district covers the bulk of the borough (alcaldía) of Cuauhtémoc, comprising 300 electoral precincts (). The exception is the northernmost strip, which is assigned to the 2nd district. The 12th district thus covers Mexico City's Centro Histórico.
The district reported a population of 410,623 in the 2020 census.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 Mexico City (Federal District) 27 40 30 27 24 22 Chamber of Deputies 196 300 Sources:
2017–2022 From 2017 to 2022, the district covered a portion of the borough of Cuauhtémoc.
2005–2017 Under the 2005 districting scheme, the 12th district covered that portion of the borough of Cuauhtémoc to the south and east of Paseo de la Reforma and Calzada de Guadalupe. The link contains maps of the 1996 and 2005 schemes.
1996–2005 Between 1996 and 2005, the district covered the southern and western portions of Cuauhtémoc. The link contains a detailed description of the 1996 district's territory.
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, the Federal District's seat allocation rose from 27 to 40. The 12th district covered portions of the boroughs of Gustavo A. Madero and Venustiano Carranza. The link contains a detailed description of the 1978 district's territory.
Deputies returned to Congress
+ Mexico City's 12th district Election Deputy Party Term LegislatureAlfonso Herrera1916–1917Constituent Congressof Querétaro1917Miguel A. PeraltaPLC1917–191827th Congress1918Federico SilvaPLN1918–192028th Congress1920Carlos ArgüellesPLC1920–192229th Congress1924Luis N. Morones1922–192630th Congress31st Congress1926Ricardo Treviño1926–192832nd Congress1928Carlos AlmazánPOI1928–193033rd Congress1930Suspended1930–193234th Congress1932Tomás A. Robinson1932–193435th Congress1934José G. Huerta1934–193736th Congress1937León García1937–194037th Congress1940PRUN1940–194338th Congress1943Leopoldo Hernández1943–194639th Congress1946Trinidad Rosales Rojas1946–194940th Congress1949Enrique Rangel Meléndez1949–195241st Congress1952Heriberto Garrido Ordóñez1952–195542nd Congress1955Juan Gómez Salas1955–195843rd Congress1958Adán Hernández Rojas1958–196144th Congress1961Rodolfo García Pérez1961–196445th Congress19641964–196746th Congress1967Martín Guaida Lara1967–197047th Congress1970Ignacio Sologuren Martínez1970–197348th Congress1973Alberto Juárez Blancas1973–197649th Congress1976Miguel López Riveroll1976–197950th Congress1979Roberto Castellanos Tovar1979–198251st Congress1982Wulfrano Leyva Salas1982–198552nd Congress1985Joaquín López Martínez1985–198853rd Congress1988Fernando Sologuren Bautista1988–199154th Congress1991Roberto Castellano Tovar1991–199455th Congress1994José Noe Moreno Carvajal1994–199756th Congress19971997–200057th Congress2000Samuel Yoselevitz Fraustro2000–200358th Congress2003Francisco Javier Saucedo2003–200659th Congress2006José Alfonso Suárez del Real2006–200960th Congress2009Agustín Guerrero Castillo2009–201261st Congress2012José Luis Muñoz Soria 2012–201562nd Congress2015Alicia Barrientos Pantoja2015–201863rd Congress2018Dolores Padierna LunaMontserrat Navarro Pérez2018–2021202164th Congress2021Gabriela Sodi Miranda2021–202465th Congress2024Mónica Elizabeth Sandoval Hernández 2024–202766th Congress
Presidential elections + Mexico City's 12th district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia54.40552024Claudia Sheinbaum Pardo Sigamos Haciendo Historia48.1074
Notes
References