18th federal electoral district of Jalisco

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,^[9] Jalisco's 18th district covers the south-west of the state, along the Pacific Ocean coast and the border with Colima, and comprises 261 electoral precincts (secciones electorales) across 25 of the state's 125 municipalities:^[10]

• Amacueca, Atemajac de Brizuela, Autlán de Navarro, Ayutla, Casimiro Castillo, Cihuatlán, Cocula, Cuautitlán de García Barragán, Chiquilistlán, Ejutla, El Grullo, La Huerta, Juchitlán, El Limón, San Gabriel, San Martín Hidalgo, Tapalpa, Tecolotlán, Tenamaxtlán, Tolimán, Tonaya, Tuxcacuesco, Unión de Tula, Villa Purificación and Zapotitlán de Vadillo.

The head town (cabecera distrital), where results from individual polling stations are gathered together and tallied, is the city of Autlán de Navarro. The district reported a population of 412,437 in the 2020 Census.^[1]

Evolution of electoral district numbers

	1974	1978	1996	2005	2017	2023
Jalisco	13	20	19	19	20	20
Chamber of Deputies	196	300
Sources: [1][11][12][13]

2017–2022

Jalisco regained its 20th congressional seat in the 2017 redistricting process. The 18th district's head town was at Autlán and it covered 22 municipalities:^[14][13]

• Ameca, Atengo, Autlán de Navarro, Ayutla, Casimiro Castillo, Cihuatlán, Cuautitlán de García Barragán, Cuautla, Chiquilistlán, Ejutla, El Grullo, El Limón, Juchitlán, La Huerta, Tecolotlán, Tenamaxtlán, Tolimán, Tonaya, Tuxcacuesco, Unión de Tula, Villa Purificación and Zapotitlán de Vadillo.

2005–2017

Under the 2005 plan, Jalisco had 19 districts. This district's head town was at Autlán and it covered 19 municipalities:^[15][16]

• Ameca, Atemajac de Brizuela, Autlán de Navarro, Casimiro Castillo, Cihuatlán, Cocula, Cuautitlán de García Barragán, Chiquilistlán, Ejutla, El Grullo, Juchitlán, El Limón, San Martín Hidalgo, Tecolotlán, Tenamaxtlán, Tonaya, Tuxcacuesco, Unión de Tula and Villa Corona.

1996–2005

In the 1996 scheme, under which Jalisco lost a single-member seat, the district had its head town at Autlán and it comprised 21 municipalities:^[17][16]

• Atengo, Autlán de Navarro, Ayutla, Casimiro Castillo, Cihuatlán, Cocula, Cuautitlán de García Barragán, Cuautla, Chiquilistlán, Ejutla, El Grullo, La Huerta, Juchitlán, El Limón, San Martín Hidalgo, Tecolotlán, Tenamaxtlán, Tonaya, Tuxcacuesco, Unión de Tula and Villa Purificación.

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, Jalisco's seat allocation rose from 13 to 20.^[11] The restored 18th district's head town was at Tlaquepaque and it covered the municipalities of El Salto, Tonalá and Tlaquepaque.^[18]