Fifty years after the start of the process of unification and thirty from the first elections to the European Parliament, this book addresses the role played by the political party in the supernational public context. It also responds to a number of interrogatives crucial for the future of the European Union: is there a Europe of the parties beyond a Europe of the nations and national governments? What role can the political parties actually play in the process of democratisation of the European Union? To address these issues of growing scientific and topical interest in the political debate, the votes expressed by the MEPs are reconstructed and analysed so as to clarify the question of the cohesion of political families and the fault lines between national delegations and Eurogroups. What emerges is a telling and problematic dimension of political conflict "in Europe" and "on Europe", already beyond the national borders but not yet the expression of Pan-European parties.