For the last 20 years, Euroscepticism has become a stable component of European politics and has attracted much attention. European elections have provided Eurosceptic parties with an opportunity to get parliamentary representation. While there is a burgeoning literature on the Eurosceptic stances of these parties, there remains relatively little research on their strategies once inside the European Parliament. This article analyzes how Eurosceptic MEPs from the ‘untidy right’ conceive and carry out their representative mandate in an institution they despise. First, it takes an historical perspective to show that despite the persistence of Euroscepticism in the European Union's elected chamber, the body of research remains comparatively limited. Second, it examines the institutional constraints faced by Eurosceptic representatives resulting from the institutional environment and the ideological heterogeneity of these actors. The final part proposes a typology of parliamentary roles to account for their attitudes and behaviours inside the chamber.© 2012 Blackwell Publishing Ltd.