The 8th federal electoral district of Guanajuato () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 15 such districts in the state of Guanajuato.
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 Ernesto Alejandro Prieto Gallardo of the National Regeneration Movement (Morena).
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 8th district covers central Guanajuato and comprises 220 electoral precincts () across three of the state's 46 municipalities: Salamanca, Santa Cruz de Juventino Rosas and Villagrán
The head town (), where results from individual polling stations are gathered together and tallied, is the city of Salamanca. The district reported a population of 422,317 in the 2020 census.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 Guanajuato 9 13 15 14 15 15 Chamber of Deputies 196 300Sources:
2017–2022 Between 2017 and 2022, the 8th district had the same configuration as in the 2023 districting scheme.
2005–2017 Under the 2005 plan, Guanajuato had only 14 districts. This district's head town was at Salamanca and it covered four municipalities: The link contains maps of the 2005 and 1996 schemes. Salamanca, Santa Cruz de Juventino Rosas and Villagrán, as in the later plans, plus Pueblo Nuevo.
1996–2005 In the 1996 scheme, under which Guanajuato was assigned 15 seats, the district had the same configuration as in the 2005 plan.
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, Guanajuato's seat allocation rose from 9 to 13. The 8th district was in the east of the state and it covered the municipalities of Celaya (which served as the head town) and Comonfort.
Deputies returned to Congress
+ Guanajuato's 8th district Election Deputy Party Term LegislatureHilario Medina1916–1917Constituent Congressof Querétaro ...1970Roberto Suárez Nieto1970–19731973Ignacio Vázquez Torres1973–19761976Graciela Meave Torrescano1976–197950th Congress1979Ofelia Ruiz Vega1979–198251st Congress1982Luis Dantón Rodríguez1982–198552nd Congress1985Jaime Martínez Jasso1985–198853rd Congress1988José Manuel Mendoza Márquez1988–199154th Congress1991Mauricio Wolnitzer Clark y Ovadía1991–199455th Congress1994Josefina Balleza Sánchez1994–199756th Congress1997Rogelio Chabolla GarcíaSergio Rosario Salazar Rojas 1997–19981998–200057th Congress2000Juan Alcocer Flores2000–200358th Congress2003Carla Rochín Nieto2003–200659th Congress2006Antonio Vega Corona2006–200960th Congress2009Tomás Gutiérrez Ramírez2009–201261st Congress2012Genaro Carreño Muro2012–201562nd Congress2015Karina Padilla Ávila2015–201863rd Congress2018Justino Eugenio Arriaga Rojas2018–202164th Congress2021Justino Eugenio Arriaga Rojas 2021–202465th Congress2024Ernesto Alejandro Prieto Gallardo2024–202766th Congress
Presidential elections + Guanajuato's 8th district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 41.13952024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 56.9641
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