The Parti socialiste fran‡ais (PSF), or French Socialist Party, is a political party in France. It was founded in 1905 and is a member of the Socialist International. The party is led by Olivier Faure and has its political base in the left-wing of the French political spectrum. The PSF advocates for social justice, equality, and environmental protection, and supports the European Union and European integration. In the most recent legislative elections in France, the PSF won 44 seats in the National Assembly.