Are Populists Sore Losers? Explaining Populist Citizens' Preferences for and Reactions to Referendums

Can referendums help increase perceived legitimacy among citizens with populist attitudes? Indeed, public opinion surveys show that populist citizens are especially in favour of referendums. However, we do not know whether this support reflects a principled desire for different decision-making procedures or an instrumental one (that is, because they expect referendums to yield favourable outcomes). We study this question on a real-life case: the Dutch 2018 referendum on the Intelligence and Security Services Act 2017. Using high-quality survey data from both before and after the referendum, we find that, counter to conventional wisdom and our hypotheses, populists' support for referendums is less driven by instrumental motives compared to that of non-populists, and that populists are more likely than non-populists to accept the outcome of a referendum, even when this outcome is unfavourable.