2004 Portuguese Socialist Party leadership election

The 2004 Portuguese Socialist Party leadership election was held on 25 and 26 September 2004. The leadership ballot was called after Socialist Party Secretary-General Eduardo Ferro Rodrigues resigned as leader of the PS, against the decision of President Jorge Sampaio to appoint Pedro Santana Lopes as prime minister, replacing José Durão Barroso.

The declared candidates included the former Minister of the Environment José Sócrates, historic Socialist deputy Manuel Alegre and former Mayor of Lisbon and son of former president Mário Soares, João Soares. Sócrates won the election, becoming the 6th Secretary-general of the Socialist Party.