The 18th federal electoral district of the State of Mexico () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 40 such districts in the State of Mexico.
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 fifth region.
The 18th district was created by 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 State of Mexico's seat allocation rose from 15 to 34. The new districts were first contended in the 1979 mid-term election.
The current member for the district, elected in the 2024 general election, is Claudia Sánchez Juárez of the Ecologist Green Party of Mexico (PVEM).
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 18th district covers 135 electoral precincts () across five of the state's 125 municipalities: Huixquilucan, Isidro Fabela, Jilotzingo, Xonacatlán and Otzolotepec (except for its extreme western portion, which belongs to the 40th district).
The head town (), where results from individual polling stations are gathered together and tallied, is the city of Huixquilucan de Degollado. In the 2020 census, the district reported a total population of 473,788.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 State of Mexico15 34 36 40 41 40 Chamber of Deputies 196 300 Sources:
Under the previous districting plans enacted by the INE and its predecessors, the 18th district was situated as follows:
2017–2022 The municipalities of Huixquilucan, Jilotzingo, Otzolotepec and Xonacatlán. The head town was at Huixquilucan de Degollado.
2005–2017 The municipalities of Huixquilucan, Isidro Fabela, Jilotzingo, Lerma and Xonacatlán. The head town was at Huixquilucan de Degollado.
1996–2005 The municipalities of Huixquilucan, Jilotzingo, Otzolotepec and Xonacatlán. The head town was at Huixquilucan de Degollado. The link contains comparative maps of the 1996 and 2005 schemes.
1978–1996 A portion of Naucalpan de Juárez.
Deputies returned to Congress
+ State of Mexico's 18th district Election Deputy Party Term Legislature1979Enrique Jacob Soriano1979–198251st Congress1982José Armando Gordillo Mandujano1982–198552nd Congress1985Amado Olvera Castillo1985–198853rd Congress19881988–199154th Congress1991Francisco Gárate Chapa1991–199455th Congress1994Salvador Ávila Zúñiga1994–199756th Congress1997Raúl Martínez Almazán 1997–200057th Congress2000Alejandro Enrique Gutiérrez Gutiérrez2000–200358th Congress2003Félix Adrián Fuentes Villalobos2003–200659th Congress2006Claudia Sánchez Juárez2006–200960th Congress2009Alfonso Navarrete Prida2009–201261st Congress2012Fernando Maldonado Hernández2012–201562nd Congress2015Alfredo del Mazo MazaMiguel Ángel Ramírez Ponce2015–20172017–201863rd Congress20182018–202164th Congress2021José Antonio García García 2021–202465th Congress2024Claudia Sánchez Juárez2024–202766th Congress
Presidential elections + State of Mexico's 18th district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 43.79492024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 49.9239
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