It was launched on 27 October 1999 and led by Francesco Cossiga, who supported the D'Alema I Cabinet since its birth thanks to his Democratic Union for the Republic (UDC). The idea of The Clover was to unify those political forces within the majority which felt marginalized. The coalition was composed of three parties:
- the Italian Democratic Socialists (SDI, social-democratic, leader: Enrico Boselli)
- the Union for the Republic (UpR, christian-democratic and liberal, leader: Francesco Cossiga)
- the Italian Republican Party (PRI, liberal, leader: Giorgio La Malfa)
The coalition was responsible of bringing down D'Alema I Cabinet (Massimo D'Alema resigned on 22 December) and decided not to enter in D'Alema II Cabinet. At that point The Clover had 18 deputies, eight senators and two ministers: Carlo Scognamiglio Pasini (UpR, Defence) and Angelo Piazza (SDI, Public Administration).
On 8 February 2008, after that Cossiga had hinted the possibility of making an alliance with the centre-right Pole of Freedoms, SDI left the coalition, while some of its members, including Claudio Martelli and Bobo Craxi, who formed the Socialist League, which replaced SDI as third component of The Clover.
Since then anyway, the coalition was loosened and each party started to take autonomous decisions, but by the 2001 general election all the three groups had joined in different ways the centre-right House of Freedoms coalition led by Silvio Berlusconi: the Socialist League took part to the foundation of the New Italian Socialist Party, PRI signed an electoral pact with Forza Italia and UpR merged into that party.