French Section of the Workers' International in the context of "French Communist Party"

The Socialist Party (French: Parti socialiste [paʁti sɔsjalist], PS) is a centre-left to left-wing political party in France. It holds social democratic and pro-European views. The PS was for decades the largest party of the "French Left" and used to be one of the two major political parties under the Fifth Republic, along with the Rally for the Republic in the late 20th century, and with the Union for a Popular Movement in the early 2000s. It is currently led by First Secretary Olivier Faure. The PS is a member of the Party of European Socialists, Progressive Alliance and Socialist International.

The PS was founded in 1969 from a merger of the French Section of the Workers' International (SFIO), the Convention of Republican Institutions led by François Mitterrand, and other groups. In the 1970s, the PS surpassed the Communist Party's share of the left-wing vote. It first won power in 1981, when Mitterrand was elected president. The PS achieved a governing majority in the National Assembly from 1981 to 1986, and again from 1988 to 1993. PS leader Lionel Jospin lost his bid to succeed Mitterrand as president in 1995 to conservative Jacques Chirac, but he served as prime minister in a cohabitation government from 1997 to 2002, when he was again defeated by Chirac in the presidential election.

The Radical Party (French: Parti radical, pronounced [paʁti ʁadikal]), officially the Republican, Radical and Radical-Socialist Party (Parti républicain, radical et radical-socialiste [paʁti ʁepyblikɛ̃ ʁadikal e ʁadikal sɔsjalist]), is a liberal and social-liberal political party in France. Since 1971, to prevent confusion with the Radical Party of the Left (PRG), it has also been referred to as Parti radical valoisien, after its headquarters on the rue de Valois. The party's name has been variously abbreviated to PRRRS, Rad, PR and PRV. Founded in 1901, the PR is the oldest active political party in France.

Coming from the Radical Republican tradition, the PR upheld the principles of private property, social justice and secularism. The Radicals were originally a left-wing group, but, starting with the emergence of the French Section of the Workers' International (SFIO) in 1905, they shifted gradually towards the centre. In 1926, its right-wing split off to form the Unionist (or National) Radicals. In 1971 the party's left-wing split off to form the PRG. The PR then affiliated with the centre-right, becoming one of the founder parties of the Union for French Democracy (UDF) in 1978. The party split from the UDF in 2002 in order to become an associate party of the Union for a Popular Movement (UMP). It was later represented on the Liaison Committee for the Presidential Majority prior to launching The Alliance (ARES) in 2011 and the Union of Democrats and Independents (UDI) in 2012. After the 2017 presidential and legislative elections, negotiations to merge the PR and the PRG began. The refounding congress to reunite the parties into the Radical Movement was held in December 2017. However, the union proved short-lived and, by 2021, both the PR and PRG returned to be independent parties. The PR has then been part of the Ensemble coalition.

The Democratic Alliance (French: Alliance démocratique, AD), originally called Democratic Republican Alliance (Alliance républicaine démocratique, ARD), was a French political party created in 1901 by followers of Léon Gambetta such as Raymond Poincaré, who would be president of the Council in the 1920s. The party was originally formed as a centre-left gathering of moderate liberals, independent Radicals who rejected the new left-leaning Radical-Socialist Party, and Moderate Republicans (Gambetta and the like), situated at the political centre and to the right of the newly formed Radical-Socialist Party. However, after World War I and the parliamentary disappearance of monarchists and Bonapartists it quickly became the main centre-right party of the Third Republic. It was part of the National Bloc right-wing coalition which won the elections after the end of the war. The ARD successively took the name "Democratic Republican Party" (Parti Républicain Démocratique, PRD), and then "Social and Republican Democratic Party" (Parti Républicain Démocratique et Social), before becoming again the AD.

The ARD was largely discredited after supporting the Vichy regime during World War II, an option strongly supported by its major leader Pierre-Étienne Flandin and other members such as Joseph Barthélemy. The centre-right party tried to reform itself under the direction of Joseph Laniel, who had taken part in the Resistance. It temporarily joined the Rally of Republican Lefts (Rassemblement des gauches républicaines, RGR) before merging into the National Center of Independents and Peasants (Centre national des indépendants et paysans, CNIP). The AD, which in contrast to the French Section of the Workers' International (SFIO) or the French Communist Party (PCF), never became a mass political party founded on voting discipline (in these left-wing parties deputies usually vote in agreement with the party's consensus), turned at that time in little more than an intellectual circle whose members met during suppers. However, it was dissolved in only 1978, long after its effective disappearance from the political scene.

Pierre Jean Marie Laval (French: [pjɛʁ laval]; 28 June 1883 – 15 October 1945) was a French politician. He served as Prime Minister of France three times: 1931–1932 and 1935–1936 during the Third Republic, and 1942–1944 during Vichy France. After the war, Laval was tried as a Nazi collaborator and executed for treason.

A socialist early in his life, Laval became a lawyer in 1909 and was famous for his defence of strikers, trade unionists and leftists from government prosecution. In 1914, he was elected to the Chamber of Deputies as a member of the French Section of the Workers' International (SFIO), and he remained committed to his pacifist convictions during the First World War. After his defeat in the 1919 election, Laval left the SFIO and became mayor of Aubervilliers. In 1924 he returned to the Chamber as an independent, and was elected to the Senate three years later. He also held a series of governmental positions, including Minister of Public Works, Minister of Justice and Minister of Labour. In 1931, Laval became prime minister, but his government fell only a year later.

Marcel Déat (French pronunciation: [maʁsɛl dea]; 7 March 1894 – 5 January 1955) was a French politician. Initially a socialist and a member of the French Section of the Workers' International (SFIO), he led a breakaway group of right-wing Neosocialists out of the SFIO in 1933. During the occupation of France by Nazi Germany, he founded the collaborationist National Popular Rally (RNP). In 1944, he became Minister of Labour and National Solidarity in Pierre Laval's government in Vichy, before escaping to the Sigmaringen enclave along with Vichy officials after the Allied landings in Normandy. Condemned in absentia for collaborationism, he died while still in hiding in Italy.

The French Left (French: Gauche française) refers to communist, socialist, social democratic, democratic socialist, and anarchist political forces in France. The term originates from the National Assembly of 1789, where supporters of the revolution were seated on the left of the assembly. During the 1800s, left largely meant support for the republic, whereas right largely meant support for the monarchy.

The left in France was represented at the beginning of the 20th century by two main political parties, namely the Republican, Radical and Radical-Socialist Party and the French Section of the Workers' International (SFIO), created in 1905 as a merger of various Marxist parties.

The Popular Front (French: Front populaire, [fʁɔ̃ pɔpylɛːʁ] ) was an alliance of left-wing movements in France, including the French Communist Party (PCF), the socialist SFIO and the Radical-Socialist Republican Party, during the interwar period. Three months after the victory of the Spanish Popular Front, the Popular Front won the May 1936 legislative election, leading to the formation of a government first headed by SFIO leader Léon Blum and composed of republican and SFIO ministers.

Blum's government implemented various social reforms. The workers' movement welcomed this electoral victory by launching a general strike in May–June 1936, resulting in the negotiation of the Matignon Agreements, one of the cornerstones of social rights in France. All employees were assured a two-week paid vacation, and the rights of unions were strengthened. The socialist movement's euphoria was apparent in SFIO member Marceau Pivert's "Tout est possible!" (Everything is possible). However, the economy continued to stall, with 1938 production still not having recovered to 1929 levels, and higher wages had been neutralized by inflation. Businessmen took their funds overseas. Blum was forced to stop his reforms and devalue the franc. With the French Senate controlled by conservatives, Blum lost power in June 1937. The presidency of the cabinet was then taken over by Camille Chautemps, a Radical-Socialist, but Blum came back as President of the Council in March 1938, before being succeeded by Édouard Daladier, another Radical-Socialist, the next month. The Popular Front dissolved itself in autumn 1938, confronted by internal dissensions related to the Spanish Civil War (1936–1939), opposition of the right-wing, and the persistent effects of the Great Depression.