The Parti Socialiste (PS) is a major political party in France, founded in 1969. It is primarily associated with social democracy and advocates for progressive policies, including social justice, economic equality, and environmental sustainability. The party has historically played a significant role in French politics, often forming the government or being part of coalitions. The PS has produced several prominent leaders, including François Mitterrand, who served as President from 1981 to 1995. Over the years, the party has faced challenges, including declining electoral support and internal divisions, but it continues to be an influential force in shaping France's political landscape.