More than ideology: perceived unfairness differentiates supporters of a new anti-austerity party from supporters of traditional left-wing parties

After the outbreak of the economic crisis in 2008, anti-austerity parties in South Europe have gained prominence and dramatically transformed the political landscape. In Spain, the emergence of PODEMOS, a left-wing, anti-austerity party, has jeopardized the traditional two-party system. However, little is known about the psychological reasons that prompted more than one million Spaniards to vote for a newly created party in its first elections. To fill this gap the present study examines why people intend to vote for PODEMOS as opposed to traditional left-wing parties. We found that in addition to conventional predictors of voting behaviour (ideological orientation and party identification), perceived unfairness - a key variable within the collective action theory - critically influenced the preference for PODEMOS as opposed to traditional left-wing parties. A qualitative analysis of the reasons that participants reported in an open question yielded similar results. These findings suggest that supporting an anti-austerity party might be considered a collective action aimed at promoting social change.