Abstract
The EUPopLink COST Action (CA23102) addresses the complex and changing relationship between populism and Euroscepticism in contemporary Europe. While often viewed as "two sides of the same coin," the nexus between these two phenomena is contingent and strategic rather than deterministic. Not all populists are Eurosceptic, and Euroscepticism is not always populist in nature. This publication synthesizes current scholarly debates, highlighting how the European Union (EU) is frequently framed as the populist "other", i.e., a remote, technocratic elite standing in opposition to the "pure people". The nature of this opposition varies significantly across the ideological spectrum, e.g. right-wing populism targets the EU primarily through a "traditionalist-authoritarian-nationalist" (TAN) lens, viewing it as a threat to national sovereignty and cultural identity, while left-wing populism critiques the EU based on socio-economic cleavages, challenging neoliberal governance and austerity while often advocating for a more democratic "Social Europe". The analysis further explores how the polycrisis era-marked by financial instability, the COVID-19 pandemic, and geopolitical conflict-has led to a sophisticated two-level strategy among populist actors. This involves increased institutional pragmatism coupled with radicalized, opportunistic communication, particularly on social media. Finally, the publication outlines the EUPopLink mandate, which seeks to standardize conceptual frameworks and generate an unprecedented body of comparative data through forthcoming country reports. By linking the supply and demand sides of electoral competition, the project aims to provide policymakers and scholars with the tools necessary to mitigate the negative consequences of these disruptive political forces.