Populism and euroscepticism are frequently studied together as the two phenomena often appear inextricably intertwined in contemporary European politics. The main objective of the COST Action entitled Linking Euroscepticism and Populism: Causes and Consequences (EUPopLink) is to increase the scholarly competence by analyzing the linkage between Euroscepticism and populism in a comparative, innovative (conceptually, methodologically, and empirically) and longitudinal perspective.