Anti-immigration party success abroad and voter polarization at home

If anti-immigration parties perform well in national elections, the media also in other countries will cover their success. This initiates a process of cross-national influence, which we argue polarizes public opinion abroad. This article examines the case of migration attitudes and how they are shaped by national election outcomes in other countries. We analyze data from the European Social Survey (ESS), and individual-level data from the Austrian National Election Study (AUTNES) in the context of the 2017 federal election in Germany. The combined findings from these analyses support our argument: citizens' polarization in one country is influenced by foreign anti-immigration parties’ electoral success. Our research holds direct implications for the understanding of public attitudes toward migration, how public opinion is formed, political polarization, and cross-country political diffusion processes.