During its existence, the 13th district returned one deputy to the lower house of Congress for each three-year legislative session by means of the first-past-the-post system. From 1979 onwards, votes cast in the district also counted towards the calculation of proportional representation ("plurinominal") deputies elected from the country's electoral regions.[1][2]
Suspended in 1930,[a]
it was re-established as part of the 1977 political reforms.[6]
The restored 13th district was first contested in the 1979 mid-term election and it elected its final deputy in the 2003 mid-terms. It was dissolved by the Instituto Federal Electoral (IFE) in the 2004/05 redistricting process because the state's population no longer warranted 13 districts.[7]
District territory
1996–2005
In its final form, the 13th district comprised eight municipalities in the south-west of the state, along the border with Jalisco and Colima and the Pacific Ocean coast:
The district's head town (cabecera distrital), where results from individual polling stations are gathered together and collated, was the port city of Lázaro Cárdenas.[8][9]
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 the reforms, Michoacán's allocation rose from 9 to 13.[10] The restored 13th district's head town was at Lázaro Cárdenas and it comprised nine municipalities:
^An amendment to Article 52 of the Constitution in 1928 changed the original provision of "one deputy per 60,000 inhabitants" to "one deputy per 100,000";[3][4] as a result, the size of the Chamber of Deputies fell from 281 in the 1928 election to 171 in 1934.[5]
^"Michoacán". División del Territorio de la República en 300 Distritos Electorales Uninominales para Elecciones Federales. Diario Oficial de la Federación. 29 May 1978. p. 30. Retrieved 30 August 2024.