As Europe enters a significant phase of re-integration of East and West, it faces an increasing problem with the rise of far-right political parties. Cas Mudde offers the first comprehensive and truly pan-European study of populist radical right parties in Europe. He focuses on the parties themselves, discussing them both as dependent and independent variables. Based upon a wealth of primary and secondary literature, this book offers critical and original insights into three major aspects of European populist radical right parties: concepts and classifications; themes and issues; and explanations for electoral failures and successes. It concludes with a discussion of the impact of radical right parties on European democracies, and vice versa, and offers suggestions for future research.