The 4th federal electoral district of Tamaulipas () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of eight such districts in the state of Tamaulipas.
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 second region.
The current member for the district, elected in the 2024 general election, is . Originally elected for the National Regeneration Movement (Morena), he switched to the Ecologist Green Party of Mexico (PVEM) at the start of the congressional session.
Tamaulipas lost a district in the 2023 districting plan adopted by the National Electoral Institute (INE), which is to be used for the 2024, 2027 and 2030 federal elections, but the 4th district was largely unaffected. It is located in the north of the state and comprises 197 electoral precincts () in the urban core of the municipality of Matamoros.
The head town (), where results from individual polling stations are gathered together and tallied, is the city of Matamoros. The district reported a population of 439,075 in the 2020 Census.
2017âÂÂ2022
2005âÂÂ2017
1996âÂÂ2005
1978âÂÂ1996