The LXIV Legislature of the Congress of the Union, the 64th session of the Congress of Mexico, convened on 1 September 2018 and ended on 31 August 2021. It was composed of the 500 federal deputies and 128 senators elected in the 2018 Mexican general election. While the deputies served only in the 64th Congress, the senators, elected to six-year terms, also formed the Senate in the 65th Congress, which convened in 2021.
Highlights
The 64th Congress was noteworthy for its gender parity, with the most women ever elected to the Chamber of Deputies and Senate. Women held 49 percent of the seats in the Senate, a national record and the third-highest percentage of women in a current national upper house, according to data collected by the Interparliamentary Union.[1] The Chamber of Deputies had the fourth-highest percentage of women among lower houses.[2]
In the Chamber of Deputies, this was the first election to be conducted after a 2017 redistricting of the federal electoral districts conducted by the National Electoral Institute. In reapportionment, Mexico City lost three seats, while seven states added a seat and four states lost one seat each.[3]
On August 23, the PRI, PRD, PAN and Movimiento Ciudadano announced they would challenge the allocation of proportional representation seats in the Chamber of Deputies, saying MORENA wad overrepresented.[4]
The Senate is composed of 128 seats; three each elected from each of Mexico's 32 federative entities for a total of 96, as well as 32 proportional representation seats.
Elected by state
In the list, the first two senators represent those who won a majority in the state, with the first referring to the first formula and the second to the second formula. The third corresponds to the senator who secured a seat through first minority.
The Chamber of Deputies is composed of 500 seats, elected from 300 single-member federal electoral districts and 40 apiece from five proportional representation electoral regions.
^ abIn Veracruz: Ricardo Ahued Bardahuil took a leave of absence on May 28, 2019 to become the Customs Director of Veracruz. He returned to the Senate on April 30, 2020 and requested another leave on March 23, 2021 to run for and later serve as mayor of Xalapa. His alternate, Ernesto Pérez Astorga, took his place on both occasions.
^Miguel Acundo González died of COVID-19 on September 16, 2020.
^Roger Aguilar Salazar, who was elected to the seat, died on September 5, 2018, and was never sworn in. Interian Gallegos was sworn in on September 13.