The Peruvian Aprista Party is a Peruvian political party and a member of the Socialist International. The party was founded as the American Popular Revolutionary Alliance by Víctor Raúl Haya de la Torre, who originally intended to create a network of anti-imperialist social and political movements in Latin America. Members are called "compañeros", based on the fraternity espoused by Haya de la Torre. Originally a centre-left to left-wing party with democratic socialist and nationalist elements, the party moved closer to the political centre under the leadership of Alan García starting in the 1980s, embracing social democracy and later some Third Way policies. In 2006, the party adopted a new platform as García's second presidency implemented a series of policies labelled as centre-right, embracing free-market capitalism, dialogue with other right-wing parties and organizations in the country, and closer ties with the Catholic Church and Evangelical churches.
The Party of the Democratic Revolution is a social democratic political party in Mexico. The PRD originated from the Democratic Current, a political faction formed in 1986 from the Institutional Revolutionary Party (PRI). The PRD was formed after the contested general election in 1988, which the PRD's immediate predecessor, the National Democratic Front, believed was rigged by the PRI. This sparked a movement away from the PRI's authoritarian rule.
The Social Democratic Party is a liberal-conservative political party in Portugal. Commonly known by its colloquial initials PSD, on ballot papers its initials appear as its official form PPD/PSD, with the first three letters coming from the party's original name, the Democratic People's Party. A party of the centre-right, the PSD is one of the two major parties in Portuguese politics, its rival being the Socialist Party (PS) on the centre-left.
The Socialist Party of Chile is a centre-left political party founded in 1933. Its historic leader was President of Chile Salvador Allende, who was deposed in a coup d'état by General Augusto Pinochet in 1973. The military junta immediately banned socialist, Marxist and other leftist political parties. Members of the Socialist party and other leftists were subject to violent suppression, including torture and murder, under the Pinochet dictatorship, and many went into exile. Twenty-seven years after the 1973 coup, Ricardo Lagos Escobar won the Presidency as the Socialist Party candidate in the 1999–2000 Chilean presidential election. Socialist Michelle Bachelet won the 2005–06 Chilean presidential election. She was the first female president of Chile and was succeeded by Sebastián Piñera in 2010. In the 2013 Chilean general election, she was again elected president, leaving office in 2018.
São Paulo Forum (FSP), also known as the Foro de São Paulo, is a conference of left to far-left political parties and other organizations from the Americas, primarily Latin America and the Caribbean. It was launched by the Workers' Party of Brazil in 1990 in the city of São Paulo.
Cidadania is a Brazilian political party. It was originally founded as the Popular Socialist Party by members of the former Brazilian Communist Party (PCB), as a centre-left social democratic and democratic socialist party. Despite its left-wing alignment, PPS moved to be opposition against the Workers' Party since 2004, forming alliances with centre-right parties, in particular the Brazilian Social Democracy Party (PSDB), and supporting the Impeachment of Dilma Rousseff. Later the party's National Convention adopted the new naming in March 2019, and it was later approved by the Superior Electoral Court that September. The party then began moving towards a more social liberal position akin to the third way.
The Communist Party of Chile is a communist party in Chile. It was founded in 1912 as the Socialist Workers' Party and adopted its current name in 1922. The party established a youth wing, the Communist Youth of Chile, in 1932.
Partido Patria Libre is a far-left Marxist–Leninist communist party in Paraguay. It defines its goals as "Marxist–Leninist, socialist patriotist, and anti-imperialist."
The Popular Socialist Party was a political party in Mexico. It was founded in 1948 as the Popular Party by Vicente Lombardo Toledano.
The Mexican Communist Party was a communist party in Mexico. It was founded in 1917 as the Socialist Workers' Party by Manabendra Nath Roy, a left-wing Indian revolutionary. The PSO changed its name to the Mexican Communist Party in November 1919. It was outlawed in 1925 and remained illegal until 1935, during the presidency of the leftist Lázaro Cárdenas. The PCM saw in the left wing of the nationalist regime that emerged from the Mexican Revolution a progressive force to be supported—i.e. Cárdenas and his allies. In the end, the PCM disappeared after helping form the Party of the Democratic Revolution, a split from the PRI led by the son of Lázaro Cárdenas, Cuauhtémoc Cárdenas.
The Mexican Socialist Party was a left-wing Mexican political party, and one of the immediate antecedents of the present Party of the Democratic Revolution. It was the last effort to unify the different Mexican left-wing parties, as well as the last political party in the country to officially use the word "socialist" in its name. It existed between 1987 and 1989.
In the context of Mexican politics, a national political association is a citizens' association intended to assist in the development of democratic life and the country's political culture, as well as being intended to create a better informed public opinion. They are similar to political parties; they used to receive public funding through the Federal Electoral Institute (IFE) for the promotion of their activities and ideas, but this was no longer the case after the 2008 political reform; after the 2014 political reform and the transformation of the IFE into INE, only political parties and independent candidates can receive public funding. APNs are not allowed to register candidates for election, though they can publicly support those of other political parties through association agreements and may only do so during federal elections. The creation of an APN is regarded as the first step towards the creation of a full-fledged political party.
The Third Force was a political alliance during the Fourth Republic (1947–1958) which gathered the French Section of the Workers' International (SFIO) party, the Democratic and Socialist Union of the Resistance (UDSR), the Radicals, the Popular Republican Movement (MRP) and other centrist politicians who were opposed to both the French Communist Party (PCF) and the Gaullist movement. The Third Force governed France from 1947 to 1951, succeeding the tripartisme alliance between the SFIO, the MRP and the PCF. The Third Force was also supported by the National Centre of Independents and Peasants (CNIP), which succeeded in having its most popular figure, Antoine Pinay, named Prime Minister in 1952, a year after the dissolving of the Third Force coalition.
A bloc party, sometimes called a satellite party, is a political party that is a constituent member of an electoral bloc. However, the term also has a more specific meaning, referring to non-ruling but legal political parties in a one-party state as auxiliary parties and members of a ruling coalition, differing such governments from pure one-party states such as Nazi Germany and the Soviet Union, although such minor parties rarely if ever constitute opposition parties or alternative sources of power. Other authoritarian regimes may also have multiple political parties which are nominally independent in order to give the appearance of political pluralism, but support or act in de facto cooperation with the government or ruling party.
A popular front is "any coalition of working-class and middle-class parties", including liberal and social democratic ones, "united for the defense of democratic forms" against "a presumed Fascist assault". More generally, it is "a coalition especially of leftist political parties against a common opponent".
Mexicoportal 
MORENA, the 
PAN, and the 
PRI. Other political parties survive in isolation or by forming local coalitions with any of the three.
