Prospects for the establishment of a unitary electoral list comprising the major pro-Catalan independence forces kicked off following the events of 2012, namely the 11 September independence demonstration in Barcelona, the 25 November regional election and the subsequent confidence and supply agreement between Convergence and Union (CiU)—the party federation comprising Democratic Convergence of Catalonia (CDC) and Democratic Union of Catalonia (UDC)—and Republican Left of Catalonia (ERC) following Catalan president Artur Mas's failure to secure an extended parliamentary majority in the election. Throughout 2013, CiU and ERC considered forming an electoral alliance of parties supporting self-determination for the 2014 European Parliament election, a proposal that also received the support of minor parties such as Ernest Maragall's New Catalan Left (NECat). The list did not materialize because of its rejection by Initiative for Catalonia Greens (ICV) and the reluctance of ERC and UDC.