The politics of Mexico function within a framework of a federal presidential representative democratic republic whose government is based on a multi-party congressional system, where the President of Mexico is both head of state and head of government. The federal government represents the United Mexican States and is divided into three branches: executive, legislative and judicial, as established by the Political Constitution of the United Mexican States, published in 1917. The constituent states of the federation must also have a republican form of government based on a congressional system as established by their respective constitutions.
The Workers' Party is a centre-left political party in Brazil that is currently the country's ruling party. Some scholars classify its ideology in the 21st century as social democracy, with the party shifting from a broadly socialist ideology in the 1990s, although the party retains a left-wing and marginal far-left faction to this day. Founded in 1980, PT governed at the federal level in a coalition government with several other parties from 1 January 2003 to 31 August 2016. After the 2002 parliamentary election, PT became the largest party in the Chamber of Deputies and the largest in the Federal Senate for the first time. With the highest approval rating in the history of the country at one time, President Luiz Inácio Lula da Silva was PT's most prominent member. Dilma Rousseff, also a member of PT, was elected twice but did not finish her second term due to her impeachment in 2016. The party came back to power with Lula's victory in the 2022 presidential election.
The Party of the Democratic Revolution is a state-level 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 that is currently the country's ruling party. 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 Party for Democracy, also known as For Democracy is a centre-left political party in Chile. It states to stand in the traditions of liberal progressivism. It was founded in December 1987 by Ricardo Lagos, who aimed at forming a legal social-democratic party, as the Socialist Party of Chile (PS) remained illegal at the time. The PPD continued to function after the defeat of Pinochet. Until 1997, double membership of PPD and the PS was allowed.
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.
This article gives an overview of liberal parties in Brazil. It is limited to liberal parties with substantial support, mainly demonstrated by having had representation in parliament. The sign ⇒ indicates a reference to another party in that scheme. For inclusion in this scheme, it isn't necessary so that parties labeled themselves as a liberal party.
The Labor Party is a political party in Mexico. It was founded on 8 December 1990. The party is currently led by Alberto Anaya.
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.
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 (most notably communist states 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". However, other alliances such as the Popular Front of India have used the term, and not all leftist or anti-fascist coalitions use the term "popular front".
The electoral regions of Mexico are geographic areas composed of various states used for the election of the 200 proportional representation legislators to the Chamber of Deputies.
Mexicoportal 
