[1] 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 third region.

[2][3] The 4th district was created as part of the 2017 redistricting process and was first contested in the 2018 general election.

[5] The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Cancún, the municipal seat of Benito Juárez.

From 2017 to 2022, the district had its head town at Cancún and it comprised 210 precincts in the municipality of Benito Juárez.