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Seventh federal electoral district of Sonora
Federal electoral district of Mexico / From Wikipedia, the free encyclopedia
The seventh federal electoral district of Sonora (Distrito electoral federal 07 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.
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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 this district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the first region.[1][2]
The 7th district was created in 1978 and was first contested in the 1979 legislative election.