The “Weight” of Territorial Issues: Evidence from Catalonia, Scotland, and Northern Ireland

Territorial debates complicate the politics of the affected regions, as parties decide whether to compete on a territorial dimension alongside other longstanding important issues. Yet, empirical evidence is scarce regarding how much voters politically weigh territorial issues against others. We theorize that in contexts when such issues are salient, they have a greater weight relative to others due to their identity-oriented nature. We present evidence from conjoint experiments from three European regions with active territorial debates: Catalonia, Scotland, and Northern Ireland. We find that territorial preferences matter more than others for candidate choice, as the reward (punishment) of congruent (incongruent) candidates is greater, and individuals are less willing to trade off on this issue. Our results have comparative implications for political competition in multidimensional spaces.