It elects one deputy to the lower house of Congress for each three-year legislative period 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 fourth region.[2][3]
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 7th district covers 249 electoral precincts (secciones electorales) across six municipalities in the central part of the state:[7][8]
The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the state capital, the city of Chilpancingo. The district reported a population of 455,602 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 7th district had its head town at Chilpancingo and it comprised four municipalities:[12][11]
The 2005 districting plan assigned Guerrero nine districts. The 7th district's head town was at Chilpancingo and it covered five municipalities:[13][14]
Under the 1996 districting plan, which allocated Guerrero ten districts, the 7th district had its head town at Chilpancingo and it covered five municipalities:[15][14]
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 newly restored 7th district's head town was at Acapulco and it covered a part of that city and the rural portion of its surrounding municipality.[16][a]
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