The 4th federal electoral district of Baja California () is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of nine such districts in the state of Baja California.
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 4th district was created by the 1977 electoral reforms and was first contested in the 1979 mid-term election. The current member for the district, elected in the 2024 general election, is of the National Regeneration Movement (Morena).
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, Baja California's seat allocation rose from eight to nine. The 4th district covers 308 precincts () in the north-eastern sector of the municipality of Tijuana.
The head town (), where results from individual polling stations are gathered together and tallied, is the city of Tijuana. The district reported a population of 433,244 in the 2020 Census.
2017âÂÂ2022
2005âÂÂ2017
1996âÂÂ2005
1978âÂÂ1996