Claudio Monteverdi | Claudio Roditi | Claudio Arrau | Claudio Reyna | Cláudio Taffarel | Claudio Scimone | Claudio Procesi | Claudio Baglioni | Claudio Lolli | Claudio Cecchetto | Claudio Magris | Claudio Naranjo | Ugolino Martelli | Sergio Claudio dos Santos | Claudio Marrero | Claudio Marchisio | Claudio Chiappucci | Claudio Bravo | Claudio Bisio | Claudio Vargas | Claudio Treves | Claudio Taffarel | Claudio Stampi | Claudio Scarchilli | Claudio Scajola | Claudio Saracini | Claudio Sanchez | Claudio R. M. Costa | Claudio Ranieri | Claudio Prieto |
The SDI was founded in 1998 by the merger of the Italian Socialists (Enrico Boselli, Roberto Villetti and Ottaviano Del Turco), the Italian Democratic Socialist Party (Gian Franco Schietroma and Giorgio Carta), a portion of the Labour Federation, a portion of the Socialist Party (Ugo Intini) and the Socialist League (Claudio Martelli and Bobo Craxi).