# 27th federal electoral district of the State of Mexico

The 27th federal electoral district of the State of Mexico (Spanish: Distrito electoral federal 27 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.
The 27th 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.

## 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 27th district is located in the Toluca Valley and covers six of the state's 125 municipalities:
* Calimaya, Chapultepec, Metepec, Mexicaltzingo, San Antonio la Isla and San Mateo Atenco.
The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Metepec. In the 2020 Census, the district reported a total population of 465,912.

## 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 27th district was situated as follows:

### 2005–2022

    The district kept the same configuration under both the 2005 and 2017 plans. It covered the municipalities of Calimaya, Chapultepec, Metepec, Mexicaltzingo, San Antonio la Isla and San Mateo Atenco, and the head town was at Metepec.

### 1996–2005

    The municipalities of Lerma, Metepec, Mexicaltzingo, Ocoyoacac and San Mateo Atenco. The head town was at Metepec.

### 1978–1996

    A portion of the municipality of Nezahualcóyotl.

## Deputies returned to Congress

Twenty-seventh federal electoral district of the State of Mexico :
| Election | Deputy | Term | Legislature |
| 1979 | José Ignacio Pichardo Pagaza | 1979–1982 | 51st Congress |
| 1982 | Carlos Barrios Honey | 1982–1985 | 52nd Congress |
| 1985 | Ricardo Regalado Hernández | 1985–1988 | 53rd Congress |
| 1988 | Mauricio Valdés Rodríguez [es] | 1988–1991 | 54th Congress |
| 1991 | Jorge René Flores Solano | 1991–1994 | 55th Congress |
| 1994 | Israel Reyes Ledezma Magaña | 1994–1997 | 56th Congress |
| 1997 | Manuel González Espinoza | 1997–2000 | 57th Congress |
| 2000 | Alfonso Guillermo Bravo y Mier | 2000–2003 | 58th Congress |
| 2003 | Julio Horacio Lujambio Moreno | 2003–2006 | 59th Congress |
| 2006 | Luis Xavier Maawad Robert | 2006–2009 | 60th Congress |
| 2009 | Miguel Ángel Terrón Mendoza | 2009–2012 | 61st Congress |
| 2012 | Laura Barrera Fortoul | 2012–2015 | 62nd Congress |
| 2015 | Carolina Monroy del Mazo | 2015–2018 | 63rd Congress |
| 2018 | Óscar González Yáñez | 2018–2021 | 64th Congress |
| 2021 | Ana Lilia Herrera Anzaldo | 2021–2024 | 65th Congress |
| 2024 | Wblester Santiago Pineda | 2024–2027 | 66th Congress |