# 3rd federal electoral district of the State of Mexico

The 3rd federal electoral district of the State of Mexico (Spanish: Distrito electoral federal 03 del Estado de México) 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.

## District territory

Under the National Electoral Institute's 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections, the 3rd district covers four municipalities in the north-west of the state:
* Atlacomulco, Ixtlahuaca, Jiquipilco and Jocotitlán.
The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Atlacomulco de Fabela.
The district has a population of 415,863. With Indigenous and Afrodescendent inhabitants accounting for over 65% of that number, the third district is classified by the National Electoral Institute (INE) as an indigenous district.

## Previous districting schemes

Evolution of electoral district numbers :
| | 1972 | 1978 | 1996 | 2005 | 2017 | 2022 |
| State of Mexico | 15 | 34 | 36 | 40 | 41 | 40 |
| Chamber of Deputies | 196 | 300 | 300 | 300 | 300 | 300 |
| Sources: |||||||
Under the previous districting plans enacted by the INE and its predecessors, the 3rd district was situated as follows:

### 2005–2022

    The district had the same configuration under both the 2017–2022 and 2005–2017 schemes. It covered the municipalities of Atlacomulco, Ixtlahuaca, Jiquipilco, Jocotitlán and El Oro. The head town was at Atlacomulco.

### 1996–2005

    The municipalities of El Oro, Temascalcingo, San Felipe del Progreso, San José del Rincón and Villa Victoria. The head town was at San Felipe del Progreso.

### 1978–1996

    The municipalities of Almoloya del Río, Atizapán, Calimaya, Capulhuac, Chapultepec, Jalatlaco, Joquicingo, Lerma, Mexicaltzingo, Ocoyoacac, Rayón, San Antonio la Isla, San Mateo Atenco, Tenango del Valle, Texcalyacac, Tianguistenco and Zinacantepec, with its head town at Lerma.

## Deputies returned to Congress

Third federal electoral district of the State of Mexico :
| Election | Deputy | Term | Legislature |
| 1979 | Alberto Rábago Camacho | 1979–1982 | 51st Congress |
| 1982 | Hugo Díaz Velázquez | 1982–1985 | 52nd Congress |
| 1985 | Alberto Rábago Camacho | 1985–1988 | 53rd Congress |
| 1988 | Octavio Moreno Toscano | 1988–1991 | 54th Congress |
| 1991 | Armando Neira Chávez | 1991–1994 | 55th Congress |
| 1994 | Lauro Rendón Castrejón | 1994–1997 | 56th Congress |
| 1997 | María Trinidad Emma Salinas López | 1997–2000 | 57th Congress |
| 2000 | Juan Manuel Martínez Nava | 2000–2003 | 58th Congress |
| 2003 | José Rangel Espinosa | 2003–2006 | 59th Congress |
| 2006 | Óscar Cárdenas Monroy | 2006–2009 | 60th Congress |
| 2009 | Emilio Chuayffet Chemor | 2009–2012 | 61st Congress |
| 2012 | José Rangel Espinosa | 2012–2015 | 62nd Congress |
| 2015 | Fidel Almanza Monroy | 2015–2018 | 63rd Congress |
| 2018 | María Teresa Marú Mejía | 2018–2021 | 64th Congress |
| 2021 | Óscar Cárdenas Monroy | 2021–2024 | 65th Congress |
| 2024 | Diana Castillo Gabino | 2024–2027 | 66th Congress |