Senate of the Republic

The Senate of the Republic, constitutionally Chamber of Senators of the Honorable Congress of the Union, is the upper house of Mexico's bicameral Congress. It currently consists of 128 members, who serve six-year terms. History Bicameral legislature, including the Senate, was established on 4 October 1824. The Senate was abolished on 7 September 1857 and re-established on 13 November 1874. Under the regime of Porfirio Díaz or the Porfiriato, many seats were given to elites and wealthy people loyal to the regime. During the Mexican Revolution, notably during the brief Madero presidency, the senate was left intact with Porfirian sympathizers and blocked the president's attempts to pass reforms for the Revolution. Composition After a series of reforms during the 1990s, the Senate is made up of 128 senators: Two for each of the 32 states elected under the principle of relative majority; One for each of the 32 states assigned under the principle of first minority (i.e. awarded to the party who had won the second highest number of votes within the state or Mexico City); Thirty-two national senators-at-large, divided among the parties in proportion to their share of the national vote.