After Jacques Chirac's success in the 2002 presidential election and the following Union for a Popular Movement (UMP)'s majority in Parliament, Strauss-Kahn was re-elected Member of Parliament on 16 June 2002, in the 8th circonscription of the Val-d'Oise. He first declined in taking part in the new leadership of the PS, then in the opposition, in the 2003 congress of the party. But he joined the party's leadership again at the end of 2004, and was given overall responsibility for drawing up the Socialist programme for the 2007 presidential election, along with Martine Aubry and Jack Lang. During the summer meeting of 2005, he announced that he would be a candidate for the primary elections of the Socialist Party for the presidential election.