This text looks at the political aspects of European integration from the point of view of domestic politics. In doing so, it goes beyond the classic analysis of how policies are made in Brussels and raises instead the question what is the power of Europe in national contexts? The questions at the heart of this volume are crucial both for our understanding of European integration and for their policy implications. What does Europeanization really mean? How can it be measured? How is the European Union affecting domestic politics and policies in member states and candidate countries? Is Europeanization an irreversible process? Does it mean convergence across Europe? How and why do differences remain? The contributors explain and question the power of Europe by providing theoretical and empirical perspectives on domestic politics and institutions, government and administration, public policies, political actors and business groups. The volume contains a research agenda for the nascent literature on Europeanization.