The Italian Democratic Socialist Party (Italian: Partito Socialista Democratico Italiano, PSDI) is a political party in Italy founded in 2004 as the continuation of the historical PSDI of Giuseppe Saragat, so that the new PSDI numbers its congresses in perfect continuity with the old PSDI. The party retains some support locally in the South, especially in Apulia. In the 2005 Apulian regional election the party won 2.2% of the vote along with other two minor parties and got one deputy elected to the Regional Council. The party did not repeat itself five years later, when it was not even able to file a list.