The 20th 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 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.
The current member for the district, elected in the 2024 general election, is of the Labour Party (PT).
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 20th district covers 278 electoral precincts () across the north-eastern portion of the borough (alcaldía) of Iztapalapa.
The district reported a population of 477,773 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 In the 2017 plan, the 20th district comprised 199 precincts in the north-east of Iztapalapa.
2005–2017 Between 2005 and 2017, the district covered 234 precincts in the centre and west of Iztapalapa. The link contains maps of the 2005 and 1996 schemes.
1996–2005 Under the 1996 scheme, the district covered 212 precincts in the centre and west of Iztapalapa. 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 20th district covered a part of the borough of Gustavo A. Madero. The link contains an exact description of the district's territory.
Deputies returned to Congress
+ Mexico City's 20th district Election Deputy Party Term Legislature1961Renaldo Guzmán Orozco1961–196445th Congress1964Antonio Martínez Manautou1964–196746th Congress1967Ignacio Guzmán Garduño1967–197047th Congress1970Oscar Hammeken Martínez1970–197348th Congress1973Ricardo Castañeda Gutiérrez1973–197649th Congress1976Jesús González Balandrano1976–197950th Congress1979Ricardo Castañeda Gutiérrez1979–198251st Congress1982 Mateo de Regil Rodríguez1982–198552nd Congress1985Antonio Punzo Gaona1985–198853rd Congress1988Sóstenes Melgarejo Fraga1988–199154th Congress1991Silvestre Fernández Barajas 1991–199455th Congress1994Adolfo Ramón Flores Rodríguez1994–199756th Congress1997Benito Mirón Lince1997–200057th Congress2000Mónica Leticia Serrano Peña2000–200358th Congress2003Diana Bernal Ladrón de Guevara2003–200659th Congress2006Efraín Morales Sánchez2006–200960th Congress2009Mario di Costanzo2009–201261st Congress2012José Alberto Benavides Castañeda2012–201562nd Congress 20152015–201863rd Congress20182018–202164th Congress20212021–202465th Congress20242024–202766th Congress
Presidential elections + Mexico City's 20th district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia63.08122024Claudia Sheinbaum Pardo Sigamos Haciendo Historia68.3626
References