The 6th federal electoral district of 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.
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.
The 6th district was created in 1978 and was first contested in the 1979 legislative election.
The current member for the district, elected in the 2024 general election, is Anabel Acosta Islas. Originally elected as a member of National Regeneration Movement (Morena), she switched allegiance to the Ecologist Green Party of Mexico (PVEM) at the start of the legislative session.
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, Sonora's 6th district comprises the 232 electoral precincts () that make up the municipality of Cajeme.
The head town (), where results from individual polling stations are gathered together and tallied, is Ciudad Obregón, the municipal seat and the state's second largest city. The district reported a population of 436,310 in the 2020 Census.
1996âÂÂ2022
1978âÂÂ1996