The Workers' Revolutionary Party (in Spanish: Partido Revolucionario de los Trabajadores, PRT) was a Trotskyist political party in Mexico. It was founded in 1976 by the merger of three Trotskyist groups: Trotskyism is the theory of Marxism as advocated by Leon Trotsky. ... A political party is an organization that seeks to attain political power within a government, usually by participating in electoral campaigns. ... 1976 (MCMLXXVI) was a leap year starting on Thursday (the link is to a full 1976 calendar). ...

• The International Communist League (Liga Comunista Internacionalista) - a group associated with the United Secretariat of the Fourth International made up primarily of student activists;
• The Mexican Morenists, who left the PRT in 1979 to form the self-called Socialist Workers' Party (POS);
• The Marxist Workers' League (Liga Obrera Marxista) - a group associated with the French Lambertists, who joined in 1977.

In the following years, other small groups of Trotskyists also joined the PRT. The United Secretariat of the Fourth International (USFI) is the largest Trotskyist international organisation. ... Nahuel Moreno (April 24, 1924 - January 25, 1987) (real name Hugo Bressano) was a Trotskyist leader from Argentina. ... The Organising Committee for the Reconstruction of the Fourth International (1972-1979) was set up by various Trotskyist groups formerly affiliated to the ICFI which were allied to Pierre Lamberts OCI. In 1979 the OCR joined forces with the Bolshevik faction led by Nahuel Moreno to form the short lived...

From their base in the 1968 student movement, the PRT grew quickly, soon gaining bases of support among some telephone, electrical, nuclear, and hospital workers. By the 1980s, it was the largest far-left party to challenge the ruling Institutional Revolutionary Party (PRI). In 1981, the federal government recognized the PRT as an official nationwide party. In the 1982 general elections, it was also the first Mexican party to raise gay rights as a campaign issue; the party fielded several openly gay candidates for the Chamber of Deputies. It also entered informal alliances with the other main party on the far left, the United Socialist Party of Mexico (PSUM). Image:Voices-of-Tlaltelolco. ... The term far left refers to the relative position a group or person occupies within the political spectrum. ... The Institutional Revolutionary Party (Spanish: Partido Revolucionario Institucional or PRI) is a Mexican political party that wielded hegemonic power in the country—under a succession of names—for more than 70 years. ... The gay rights movement is a collection of loosely aligned civil rights groups, human rights groups, support groups and political activists seeking acceptance, tolerance and equality for non-heterosexual, (homosexual, bisexual), and transgender people - despite the fact that it is typically referred to as the gay rights movement, members also... The Chamber of Deputies (Spanish: Cámara de Diputados) is the lower house of Mexicos bicameral legislature, the Congress of the Union. ...

During the latter half of the 1980s, the PRT began to face crises and in-fighting as its progress slowed. It has been alleged that the ruling PRI sent agents into the PRT to disrupt its activities. During the 1988 presidential election, the PRT lost ground as an electoral party because of the campaign of leftist Cuauhtémoc Cárdenas, who soon formed the Democratic Revolutionary Party (PRD). Cuauhtémoc Cárdenas Solórzano (born May 1, 1934) is a prominent Mexican politician. ... The Party of the Democratic Revolution (in Spanish: Partido de la Revolución Democrática, PRD) is one of the three main political parties in Mexico. ...

In 1996, after losing federal recognition, what remained of the PRT (led by Edgard Sánchez Ramírez) formed Socialist Convergence. In 1999, a group split off from Socialist Convergence and created a "new" Revolutionary Workers' Party, which also failed to secure recogntion from the Federal Electoral Institute. Several groups that split off from the PRT-Socialist Convergence reunited in the Socialist Alliance. The Federal Electoral Institute (IFE) is an autonomous, public organization responsible for organizing federal elections in Mexico, that is, those related to the election of president of the United Mexican States and to the election of Lower and Upper Chamber members that constitute the Mexican Union Congress. ...

Further reading

• Robert J. Alexander, International Trotskyism, 1929-1985: A Documented Analysis of the Movement (Durham: Duke University Press, 1991), 607-618. ISBN 0822309750