Populist politics have become an increasingly central concern in sociology and political science, as radical-right parties have made major political gains across a number of European countries. Much of this research has treated populism as an essential ideological attribute of political actors--either parties or their leaders—and sought to identify the socioeconomic bases of their electoral successes. This approach has been useful, but its focus on stable and coherent ideology has missed the dynamic and relational aspects of populism as a form of political claims-making. Populism is not only an ideological orientation expressed through party manifestos and policies, but also a mode of political discourse that is strategically employed by a wide range of actors, both on the radical left and the right, in an effort to mobilize support for their political projects, whether those involve legislative initiatives or electoral campaigns at the national or European level. This panel aims to expand the scope of the scholarly debate about populism by examining the content of populist claims, their resonance among changing target publics, the use of new media channels by populist actors, and the relationship between populism and other modes of political claims-making. The resulting insights are likely to be relevant for the scholarly understanding of populism not only in Europe, but also in other contemporary democracies.