Will Conflict Tear us Apart? The Effects of Conflict and Valenced Media Messages on Polarizing Attitudes Toward EU Immigration and Border Control

European migration and border control has occupied a prominent spot on the European political agenda. The news media present the topic in a polarized fashion and reports conflicting viewpoints on how the European Union (EU) and national governments should address the issue. We argue that this conflict in news messages can have a polarizing effect on public perceptions regarding the EU's performance on this topic, and that this effect can be moderated by the valence of news messages. A two-wave online panel survey experiment was conducted on a representative sample of the Dutch population (n = 376). The results indicate that conflict reinforces and thus polarizes policy attitudes, whereas a message's valence can change people's attitudes, which reduces the attitudinal gap. The implications of these findings concerning European border control and migration are discussed in the final section of this paper.