The LXIII Legislature of the Congress of the Union, the 63rd session of the Congress of Mexico, was made up of senators and deputies that are members of their respective chambers. It convened on September 1, 2015, and concluded on August 31, 2018. It was succeeded by the LXIV Legislature in 2018.
Senators were elected to office in the 2012 election for a period of six years and therefore exercised their position also in the previous legislature; the deputies, elected in the 2015 election, only held office in the current legislature.
The formation of the 63rd Congress was as follows:
Members of the Senate are elected for a period of six years, three for each of the states and the Federal District, and 32 more for a national list, giving a total of 128 Senators.
For the internal government of the Senate, senators are grouped by political party for which they were elected in parliamentary groups, each of which is headed by a coordinator. The coordinators of all groups in turn form the Board of Policy Coordination of the Senate.
The 128 Senators who make up the LXII Legislature are:
The Chamber of Deputies is composed of 500 elected legislators for a period of 3 years and nonreeligible for the immediate period . 300 deputies are elected by direct vote for each one of the Electoral Districts of the country, and the other 200 by a system voted in each of the Constituencies lists.
The composition of the Chamber of Deputies in the Legislature LXIII is as follows :