摘要:A significant number of European electors are turning their backs on traditional main-stream parties. European party systems are being challenged by an increasing number of (new) radical parties, which defied the Christian-social democrat alternation that has dominated Western European countries for decades. In Spain, a political earthquake started after the 2014 European Parliament election. In the context of the worst global economic crisis in the last 80 years (which in Spain is also a social, political and institutional crisis), a party called Podemos won 7.9% of votes and five MEPs, significantly altering the traditional balance of the Spanish party system. This paper studies the causes of the support received by Podemos on 2014 EP elections, dissects its political strategy and analyses the characteristics of the electorate that made possible the birth of this new party. The analysis, which is illustrated using micro-data of twelve surveys, discloses Podemos political agenda.