[2][3][4] In a meeting organized by 360 in June 2008 in Piacenza, UDC leader Pier Ferdinando Casini, explained that he could easily be member of a party alongside Letta, but not with Antonio Di Pietro's Italy of Values.

The candidacy of Letta in the 2007 Democratic primary election was supported by the Democrats for Letta lists,[6] representing the liberal component of the Ulivists, that is to say the faction which was closer to Romano Prodi, and including Paolo De Castro, Umberto Ranieri, Gianni Pittella (leader of the Italian delegation to the Party of European Socialists in the European Parliament), Renato Soru (and his Sardinia Project party), Vito De Filippo, Gian Mario Spacca, Lorenzo Dellai, Marco Stradiotto and Francesco Boccia.

[7] Soru, De Filippo, Spacca and Dellai were respectively President of Sardinia, Basilicata, Marche and Trentino, and the last three represented the more conservative and traditionally Christian-democratic faction within Democracy is Freedom – The Daisy, the party of which Letta was a leading member, while Ranieri and Pittella represented the more centrist wing of the Democrats of the Left.

The Democrats for Letta list won 11.0% of the vote nationally, having its strongholds in Northern Italy and in some regions of the South.

[8] In June 2008 some Lettiani joined forces with Dalemiani, the group around Massimo D'Alema, who himself supports the alliance with UDC and a more structured party.