This chapter provides an overview of the resurgence of strong radical right-wing parties and movements during the past decades. An overwhelming majority of books and papers published on the contemporary radical right focus on party politics and electoral politics. This handbook includes chapters covering all major theoretical and methodological strands in this literature. This chapter first discusses the defining characteristics of the radical right, including their ideology and political program, nationalism and ethnic exclusion, populism, and fascism. It then attempts to explain voter support of radical right-wing parties and movements, the radical right as social movement and in the non-party sector, and the impact of the radical right.