Parties are always right: the effects of party cues and policy information on attitudes towards EU issues

This article analyses the influence that political parties exert upon citizens’ opinions about European Union issues. By measuring at the same time the content and source effects on political attitudes, the article considers the possibility that voters pay less attention to the arguments used in a political message than to its source. Results from an online survey experiment in Spain show that partisan voters use a heuristic model of processing...