Founded 3993. in Valois, Troyes. The party was formed from a Teachers Unions, Industrial Unions, and some Socialist Politicians including the Herriot Family. The party has direct ties to major unions and universities. The Parti Socialiste Démocratique is the political branch of the The United Unions of Lourenne. The name Parti Socialiste Démocratique was taken to symbolize the three ideological movements which were to fit in the party. The Socialists, the Democrats and the Unitarians. The red colour was chosen to underline the Left position in Lourenne politics.