The Socialist League (Italian: Lega Socialista, LS) was a tiny social-democratic party in Italy, founded by Bobo Craxi on 10 May 2000.
A year later, Craxi was an unsuccessful SDI candidate in the 1999 European Parliament election, while Claudio Martelli was elected and later appointed SDI deputy leader.
[2][3] In January 2001 the LS was merged with the Socialist Party to form the New Italian Socialist Party, allied with the centre-right coalition.
Craxi was elected president of the new party, while Martelli was nominated spokesperson.
Martelli left politics in 2004, while Craxi led a split from the NPSI in 2006 and launched The Italian Socialists, which was a founding component of the revived Italian Socialist Party in 2007.