Replication Data for: Who are the cosmopolitans? How perceived social sorting and social identities relate to European and national identities

Transnational European identities influence public debates and electoral dynamics across Europe, with sociodemographic factors strongly associated with these identities. Meanwhile, little attention has been paid to how people's perceptions of a political group's sociodemographic profile relate to their identification with Europe. I argue that such perceptions, in combination with social identities, are significantly associated with the strength of individuals' identification with political groups. An individual is more likely to have a robust European identity if they perceive that social groups they like share the same pro-European opinion. In contrast, if they perceive that groups they like align with the anti-European camp, they are likely to have a weaker European identity. By employing novel survey data from Italy and Austria, I find empirical support for my argument. This paper contributes to the debate on the mechanisms that connect social and political identities and explains how cleavages emerge in the mass public.