The Federation of the Left (Italian: Federazione della Sinistra, FdS) was an electoral alliance of communist political parties in Italy.

In the run-up to the 2009 European Parliament election, in order to overcome the 4% threshold introduced by the new electoral law,[1][2] it was formed the so-called Anticapitalist and Communist List (Italian: Lista Comunista e Anticapitalista).

The list may be the start of a process of re-union of the two major communist parties of Italy, that had been anyway reduced in their electoral strength since then.

[5] The support for FdS followed a similar pattern in the 2010 regional elections, despite losing votes to Left Ecology Freedom.

In December 2012, the PRC and the PdCI supported the new list led by Antonio Ingroia called "Civil Revolution", with the aim to create a new political pole.