[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 first region.

[5] The district's head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the state capital, the city of Tepic.

[1] Between 2017 and 2022, as in the 2022 plan, the district comprised the municipality of Tepic, with the state capital serving as the head town.

[7][9] 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.