4th federal electoral district of Baja California

Baja California under the 2017–2022 districting scheme

Baja California's districts between 2005 and 2017

The 4th federal electoral district of Baja California (Spanish: Distrito electoral federal 04 de 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 Rocío López Gorosave 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 (secciones electorales) in the north-eastern sector of the municipality of Tijuana.

The head town (cabecera distrital), 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.

2017–2022

Between 2017 and 2022, the 4th district covered 316 precincts in the east of the municipality of Tijuana. The head town was at Tijuana.

2005–2017

From 2005 to 2017, the 4th district comprised the north-eastern portion of the municipality of Tijuana. The head town was at Tijuana.

1996–2005

Between 1996 and 2005, the district covered the east of the municipality of Tijuana. The head town was at Tijuana.

1978–1996

The districting scheme in force from 1978 to 1996 was the result of the 1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300. Under that plan, Baja California's seat allocation rose from three to six. The newly created 4th district covered a part of the city of Mexicali and a part of its surrounding municipality.