The 1st federal electoral district of Sinaloa () 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 Sinaloa.
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, elected in the 2024 general election, is Graciela Domínguez Nava 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 covers 468 electoral precincts () across four municipalities in the extreme south of the state: Concordia, Escuinapa and Rosario in their entirety, and 273 precincts in the southern and eastern portions of Mazatlán.
The head town (), where results from individual polling stations are gathered together and tallied, is the port city of Mazatlán. The district reported a population of 425,184 in the 2020 census.
Previous districting schemes + Evolution of electoral district numbers 1974 1978 1996 2005 2017 2023 Sinaloa 5 9 8 8 7 7 Chamber of Deputies 196 300 Sources:
2017–2022 The same four municipalities as in the 2023 plan, but with Mazatlán divided differently (only 271 precincts assigned to the district). The head town was at Mazatlán.
2005–2017 The municipalities of Choix, El Fuerte, Sinaloa, Mocorito and Badiraguato in the north of the state. The head town was at El Fuerte. The link contains comparative maps of the 1996 and 2005 schemes.
1996–2005 The municipalities of Choix, El Fuerte, Salvador Alvarado and Sinaloa, with the head town at El Fuerte.
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, Sinaloa's seat allocation rose from five to nine. The 1st district was located in the north-west of the state: it covered a part of the municipality of Ahome, including the city of Los Mochis.
Deputies returned to Congress
+ Sinaloa's 1st district Election Deputy Party Term Legislature1908Manuel Uruchurtu Ramírez1908–191024th Congress1910Manuel Uruchurtu Ramírez1910–191225th CongressPedro R. Zavala1916–1917Constituent Congressof Querétaro ...1979Salvador Esquer Apodaca1979–198251st Congress1982Ángel Sandoval Romero1982–198552nd Congress1985Salvador Esquer Apodaca1985–198853rd Congress1988Ramón Alejo Valdez López1988–199154th Congress1991Jesús Octavio Falomir Hernández1991–199455th Congress1994Alfredo Valdez Gaxiola1994–199756th Congress1997Jesús Higuera Laura1997–200057th Congress2000Fernando Díaz de la Vega2000–200358th Congress2003Francisco Cuauhtémoc Frías Castro2003–200659th Congress2006Mayra Gisela Peñuelas Acuña2006–200960th Congress2009Óscar Lara Salazar2009–201261st Congress2012Román Alfredo Padilla Fierro2012–201562nd Congress20152015–201863rd Congress2018José Mario Osuna Medina 2018–20192019–202164th Congress2021Leobardo Alcántara Martínez 2021–202465th Congress2024Graciela Domínguez Nava 2024–202766th Congress
Presidential elections + Sinaloa's 1st district Election District won by Party or coalition % 2018Andrés Manuel López Obrador Juntos Haremos Historia 62.81482024Claudia Sheinbaum Pardo Sigamos Haciendo Historia 73.2033
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