# 12th federal electoral district of Mexico City

The 12th federal electoral district of Mexico City (Distrito electoral federal 12 de la Ciudad de México; 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 the 22 currently operational 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.

## District territory

Under the National Electoral Institute's 2022 districting plan, which will be used for the 2024, 2027 and 2030 federal elections, the twelfth district covers the bulk of the borough (alcaldía) of Cuauhtémoc. The exception is the northernmost strip, which is assigned to the second district. The 12th district thus covers Mexico City's Centro Histórico.

## Previous districting schemes

Under the 2005 districting scheme, the 12th district covered that portion of the borough (delegación) of Cuauhtémoc to the south and east of Paseo de la Reforma and Calzada de Guadalupe.
Between 1996 and 2005, the district covered the southern and western portions of Cuauhtémoc.

## Deputies returned to Congress

Twelfth federal electoral district of Mexico City :
| Election | Deputy | Party | Term | Legislature |
| 1916 [es] | Alfonso Herrera | | 1916–1917 | Constituent Congress of Querétaro |
| 1917 | Miguel A. Peralta | PLC | 1917–1918 | 27th Congress |
| 1918 | Federico Silva | PLN | 1918–1920 | 28th Congress |
| 1920 | Carlos Argüelles | PLC | 1920–1922 | 29th Congress |
| 1922 [es] 1924 | Luis N. Morones | | 1922–1926 | 30th Congress 31st Congress |
| 1926 | Ricardo Treviño | | 1926–1928 | 32nd Congress |
| 1928 | Carlos Almazán | POI | 1928–1930 | 33rd Congress |
| 1930 | Suspended | Suspended | 1930–1932 | 34th Congress |
| 1932 | Tomás A. Robinson | | 1932–1934 | 35th Congress |
| 1934 | José G. Huerta | | 1934–1937 | 36th Congress |
| 1937 | León García | | 1937–1940 | 37th Congress |
| 1940 | Aarón Camacho López | PRUN | 1940–1943 | 38th Congress |
| 1943 | Leopoldo Hernández | | 1943–1946 | 39th Congress |
| 1946 | Trinidad Rosales Rojas | | 1946–1949 | 40th Congress |
| 1949 | Enrique Rangel Meléndez | | 1949–1952 | 41st Congress |
| 1952 | Heriberto Garrido Ordóñez | | 1952–1955 | 42nd Congress |
| 1955 | Juan Gómez Salas | | 1955–1958 | 43rd Congress |
| 1958 | Adán Hernández Rojas | | 1958–1961 | 44th Congress |
| 1961 | Rodolfo García Pérez | | 1961–1964 | 45th Congress |
| 1964 | Martha Andrade de Del Rosal [es] | | 1964–1967 | 46th Congress |
| 1967 | Martín Guaida Lara | | 1967–1970 | 47th Congress |
| 1970 | Ignacio Sologuren Martínez | | 1970–1973 | 48th Congress |
| 1973 | Alberto Juárez Blancas | | 1973–1976 | 49th Congress |
| 1976 | Miguel López Riveroll | | 1976–1979 | 50th Congress |
| 1979 | Roberto Castellanos Tovar | | 1979–1982 | 51st Congress |
| 1982 | Wulfrano Leyva Salas | | 1982–1985 | 52nd Congress |
| 1985 | Joaquín López Martínez | | 1985–1988 | 53rd Congress |
| 1988 | Fernando Sologuren Bautista | | 1988–1991 | 54th Congress |
| 1991 | Roberto Castellano Tovar | | 1991–1994 | 55th Congress |
| 1994 | José Noe Moreno Carvajal | | 1994–1997 | 56th Congress |
| 1997 | Estrella Vázquez Osorno [es] | | 1997–2000 | 57th Congress |
| 2000 | Samuel Yoselevitz Fraustro | | 2000–2003 | 58th Congress |
| 2003 | Francisco Javier Saucedo | | 2003–2006 | 59th Congress |
| 2006 | José Alfonso Suárez del Real | | 2006–2009 | 60th Congress |
| 2009 | Agustín Guerrero Castillo | | 2009–2012 | 61st Congress |
| 2012 | José Luis Muñoz Soria | | 2012–2015 | 62nd Congress |
| 2015 | Alicia Barrientos Pantoja | | 2015–2018 | 63rd Congress |
| 2018 | Dolores Padierna Luna Montserrat Navarro Pérez | | 2018–2021 2021 | 64th Congress |
| 2021 | Gabriela Sodi Miranda | | 2021–2024 | 65th Congress |
| 2024 | Mónica Sandoval Hernández | | 2024–2027 | 66th Congress |