The 1st federal electoral district of Sonora () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of seven such districts in the state of Sonora.
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 first region.
The current member for the district, re-elected in the 2024 general election, is 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 first district comprises 176 electoral precincts () across 11 municipalities in the state's north-west: Altar, Atil, Caborca, Oquitoa, Pitiquito, Plutarco Elías Calles, Puerto Peñasco, San Luis Río Colorado, Sáric, Trincheras and Tubutama. The head town (), where results from individual polling stations are gathered together and tallied, is the city of San Luis Río Colorado. The district reported a population of 389,127 in the 2020 census.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 Sonora 4 7 7 7 7 7 Chamber of Deputies 196 300Sources:
2017–2022 Between 2017 and 2022, the district had the same configuration as in the 2023 scheme.
2005–2017 Under the 2005 plan, the district covered 13 municipalities: the 2023's scheme's 11, plus Benjamín Hill and Santa Ana. The link contains comparative maps of the 2005 and 1996 configurations.
1996–2005 Under the 1996 districting plan, the head town was at San Luis Río Colorado and the district covered the state's north-west. The link provides a complete list of the municipalities covered.
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, Sonora's seat allocation rose from four to seven. The 1st district had its head town at Magdalena de Kino and it covered 34 municipalities in the north of the state. The link provides a complete list of the municipalities covered.
Deputies returned to Congress
+ Sonora's 1st district Election Deputy Party Term LegislatureLuis G. Monzón 1916–1917Constituent Congressof Querétaro ...1976Ricardo Castillo Peralta1976–197950th Congress1979Luis Antonio Bojórquez Serrano1979–198251st Congress1982Luis Héctor Ochoa Bercini1982–198552nd Congress1985Luis Donaldo Colosio Murrieta1985–198853rd Congress1988Armando López Nogales1988–199154th Congress1991Guillermo Hopkins Gamez1991–199455th Congress1994Daniel Trélles Iruretagoyena1994–199756th Congress1997Francisco Suárez Tánori1997–200057th Congress2000Marcos Pérez Esquer2000–200358th Congress2003Julio César Córdova2003–200659th Congress2006José Inés Palafox Núñez2006–200960th Congress2009Leonardo Arturo Guillén Medina2009–201261st Congress2012José Enrique Reina Lizárraga2012–201562nd Congress2015José Everardo López Córdova2015–201863rd Congress20182018–202164th Congress20212021–202465th Congress20242024–202766th Congress
Presidential elections + Sonora's 1st district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 57.47872024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 61.3527
References