Twelfth federal electoral district of Veracruz

The twelfth federal electoral district of Veracruz (Distrito electoral federal 12 de Veracruz) is one of the 300 electoral districts into which Mexico is divided for elections to the federal Chamber of Deputies and one of 19 such districts in the state of Veracruz.

It elects one deputy to the lower house of Congress for each three-year legislative period, by means of the first-past-the-post system. Votes cast in this district also count towards the calculation of proportional representation ("plurinominal") deputies elected from the third region.

District territory
Veracruz lost a congressional district in the 2022 redistricting plan, which is to be used for the 2024, 2027 and 2030 elections. The reconfigured 12th district covers the bulk of the municipality of Veracruz, including the downtown area of the port of Veracruz (the southern portion of the city is assigned to the 4th district based in Boca del Río). The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, is the city of Veracruz.

Previous districting schemes
Between 2017 and 2022, Veracruz was assigned 20 electoral districts. The 12th district covered 181 precincts (secciones electorales) in the municipality of Veracruz, plus the municipalities of Boca del Río, Jamapa, Manlio Fabio Altamirano and Medellín. Its head town was the city of Veracruz.
 * 2017–2022

Veracruz's allocation of congressional seats fell to 21 in the 2005 redistricting process. Between 2005 and 2017 the 12th district had its head town at Veracruz and it comprised the north-western portion of the municipality of Veracruz.
 * 2005–2017

Under the 1996 districting plan, which allocated Veracruz 23 districts, the head town was the city of Veracruz.
 * 1996–2005

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, Veracruz's seat allocation rose from 15 to 23. The 12th district had its head town at Cosamaloapan and it covered the municipalities of Acula, Alvarado, Amatitlán, Cosamaloapan, Chacaltianguis, Ignacio de la Llave, Ixmatlahuacán, Otatitlán, Tierra Blanca, Tlacojalpan and Tuxtilla.
 * 1978–1996