The fifth federal electoral district of Sonora (Distrito electoral federal 05 de Sonora) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of seven such districts in the state of Sonora.[1]
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 first region.[2][3]
Suspended in 1930,[a] the 5th district was re-established in 1978 and was contested again in the 1979 legislative election.
District territory
Under the 2022 districting plan, which is to be used for the 2024, 2027 and 2030 federal elections,[7]
Sonora's fifth district covers the south-eastern half of the municipality of Hermosillo.[8][9]
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 Hermosillo.[1]
Previous districting schemes
2017–2022
Between 2017 and 2022, the district had the same configuration as at present.[10]
1996–2017
In the 1996 and 2005 districting plans, the district covered the southern and eastern parts of the municipality of Hermosillo, albeit with adjustments to the dividing line with the remainder of the municipality belonging to the third district under the different schemes.[11]
^An amendment to Article 52 of the Constitution in 1928 changed the original provision of "one deputy per 60,000 inhabitants" to "one deputy per 100,000";[4][5] as a result, the size of the Chamber of Deputies fell from 281 in the 1928 election to 171 in 1934.[6]
^"Sonora". División del Territorio de la República en 300 Distritos Electorales Uninominales para Elecciones Federales. Diario Oficial de la Federación. 29 May 1978. p. 40. Retrieved 19 July 2024.