The was a political party in France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 founded in 1933 during the late Third Republic

French Third Republic

The French Third Republic was the republican government of France from 1870, when the Second French Empire collapsed due to the French defeat in the Franco-Prussian War, to 1940, when France was overrun by Nazi Germany during World War II, resulting in the German and Italian occupations of France...

 which united the right-wing of the French Section of the Workers' International (SFIO).

The PSdF was formed by Neosocialist members of the SFIO expelled from the party in 1933. These included Marcel Déat

Marcel Déat

Marcel Déat was a French Socialist until 1933, when he initiated a spin-off from the French Section of the Workers' International along with other right-wing 'Neosocialists'. He then founded the collaborationist National Popular Rally during the Vichy regime...

, Paul Ramadier

Paul Ramadier

Paul Ramadier was a prominent French politician of the Third and Fourth Republics. Mayor of Decazeville starting in 1919, he served as the first Prime Minister of the Fourth Republic in 1947. On 10 July 1940, he voted against the granting of the full powers to Marshal Philippe Pétain, who...

 and Adrien Marquet

Adrien Marquet

Adrien Marquet was a socialist mayor of Bordeaux who turned to the far right.-Career:...

. The party was weak and merged with the Republican-Socialist Party

Republican-Socialist Party

The Republican-Socialist Party was a French socialist political party during the French Third Republic, founded in 1911 and dissolved in 1934. It was founded by socialists who refused to join the SFIO founded in 1905. The PRS was a non-Marxist "reformist socialist" party located between the SFIO...

 and the French Socialist Party

French Socialist Party (1919)

The French Socialist Party , the second political party to exist under this name, was a political party in France founded in 1919 during the Third Republic which emerged from the right-wing of the French Section of the Workers' International...

 to form the Socialist Republican Union

Socialist Republican Union

The ' was a political party in France founded in 1935 during the late Third Republic which united the right-wing of the French Section of the Workers' International.The USR was founded by the following parties:*Socialist Party of France-Jean Jaurès Union...

 (USR) in 1935. The USR participated in the Popular Front

Popular Front (France)

The Popular Front was an alliance of left-wing movements, including the French Communist Party , the French Section of the Workers' International and the Radical and Socialist Party, during the interwar period...

.