Radical right-wing parties are today established in a majority of Western European party systems, and increasingly so also in Eastern Europe. The emergence of the recent wave of radical right-wing party politics has generated a large and growing literature, spanning a variety of dimensions—such as ideology, voting, and policy impact. This volume will cover all these dimensions, but it will in particular focus on two questions: why is it that the working class tends to be especially attracted by the radical right-wing parties? And what does the radical right-wing parties’ growing electoral success mean for social democracy and the traditional left in Europe, which are meeting growing competition from the radical right over working-class voters?