1st federal electoral district of Guerrero

Guerrero lost a congressional seat in the 2023 redistricting process carried out by the National Electoral Institute (INE). Under the new districting plan, which is to be used for the 2024, 2027 and 2030 federal elections,^[6] the reconfigured 1st district is located in the state's Tierra Caliente region and covers 617 electoral precincts (secciones electorales) across 19 municipalities:^[7][8]

• Coyuca de Catalán, Ajuchitlán, San Miguel Totolapan, Apaxtla, Cuetzala del Progreso, Teloloapan, Ixcateopan, Pedro Ascencio Alquisiras, General Canuto A. Neri, Arcelia, Tlapehuala, Tlalchapa, Cutzamala, Pungarabato and Zirándaro (all included in the 2017 scheme)
• Pilcaya, Tetipac, Taxco and Buenavista de Cuéllar (new additions)

The head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Ciudad Altamirano in the municipality of Pungarabato. The district reported a population of 482,210 in the 2020 Census.^[1]

Because of shifting population patterns, Guerrero currently has two fewer districts than the ten the state was assigned under the 1977 electoral reforms that set the national total at 300.^[10]

2017–2022

Between 2017 and 2022, Guerrero was allocated nine electoral districts. The 1st district had its head town at Ciudad Altamirano and it comprised 16 municipalities:^[12][11]

• Coyuca de Catalán, Ajuchitlán, San Miguel Totolapan, Apaxtla, Cuetzala del Progreso, Teloloapan, Ixcateopan, Pedro Ascencio Alquisiras, General Neri, Arcelia, Tlapehuala, Tlalchapa, Cutzamala, Pungarabato and Zirándaro (all included in the 2023 plan), plus the municipality of Cocula.

2005–2017

The 2005 districting plan assigned Guerrero nine districts. The 1st district covered 12 municipalities in the north-west of the state:^[13][14]

• Ajuchitlán del Progreso, Apaxtla, Arcelia, Coyuca de Catalán, Cutzamala de Pinzón, General Heliodoro Castillo, Leonardo Bravo, Pungarabato, San Miguel Totolapan, Tlalchapa, Tlapehuala and Zirándaro.

The head town was at Ciudad Altamirano.

1996–2005

Under the 1996 districting plan, which allocated Guerrero ten districts, the head town was moved to Coyuca de Catalán. The district covered nine municipalities:^[15][14]

• Ajuchitlán del Progreso, Arcelia, Coyuca de Catalán, Cutzamala de Pinzón, Pungarabato, San Miguel Tlalchapa, Tlapehuala, Totolapan and Zirándaro.

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, Guerrero's district allocation rose from six to ten.^[9] The 1st district had its head town at the state capital, Chilpancingo, and it covered the municipalities of Coyuca de Benítez, Chilpancingo de los Bravo, Juan R. Escudero, Mochitlán, Quechultenango and Tixtla de Guerrero.^[16]