The Parti Socialiste (PS) is a major political party in France, founded in 1969. It is known for its center-left ideology, advocating for social democracy and progressive policies. The party has historically focused on issues such as social justice, workers' rights, and public services. The PS has played a significant role in French politics, producing several presidents, including François Mitterrand and François Hollande. Over the years, the party has faced challenges, including declining electoral support and internal divisions, but it remains an influential force in shaping France's political landscape.