7th federal electoral district of San Luis Potosí

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,^[9] the 7th district is in the extreme south-east of the state, covering much of its Huasteca region. It comprises 285 electoral precincts (secciones electorales) across 13 of the state's municipalities:^[10]

• Aquismón, Axtla de Terrazas, Coxcatlán, Huehuetlán, Matlapa, San Antonio, San Martín Chalchicuautla, Tamazunchale, Tampacán, Tampamolón, Tancanhuitz, Tanlajás and Xilitla.

The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Tamazunchale.^[1]

The district reported a population of 379,671 in the 2020 Census. With Indigenous and Afrodescendent inhabitants accounting for over 80% of that total, it is classified by the INE as an indigenous district – the only indigenous federal electoral district in the state.^[1][b]

2017–2022

Between 2017 and 2022, the district had the same configuration as in the 2023 plan.^[14][13]

2005–2017

Under the 2005 districting plan, the district comprised the same 13 municipalities as in the later plans.^[15][16]

1996–2005

From 1996 to 2005, the district covered ten municipalities: the same grouping as the later plans but without San Antonio, Tampamolón and Tanlajás.^[17][16]

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, San Luis Potosí's seat allocation rose from five to seven.^[6] The re-established seventh district's head town was the city of Tamazunchale and it covered the municipalities of Ciudad Santos, Coxcatlán, Huehuetlán, San Martín Chalchicuautla, Tamazunchale, Tampacán, Tanquián de Escobedo, Villa Terrazas and Xilitla.^[18]