 They included Ugo Intini, Enrico Manca, Gianni De Michelis, Fabrizio Cicchitto, Margherita Boniver, Donato Robilotta and Craxi's son, Bobo.In 2000, the Movement of Social Democratic Rebirth of Luigi Preti also joined the PS, that changed its name to Socialist Party – Social Democracy ("Partito Socialista – Socialdemocrazia"), even if the two parties never formally merged.In 2001, the PS merged with the Socialist League and other splinter groups from the SDI to form the New Italian Socialist Party.