Article révisé par les pairs
Résumé : Despite the proliferation of studies exploring the success of the populist radical right, there is a lack of research on why these parties decline or fail. And when this question is addressed, the literature focuses on supply-side variables such as leadership battles or a lack of organizational structure. These explanations largely fall short, however, in understanding the strange decline of the Belgian Vlaams Belang at the latest elections. Instead, it is argued that there is less space available for the populist radical right. Survey data suggests that two competing parties succeeded in exploiting issues that were previously owned exclusively by the Vlaams Belang (VB). More surprising, however, is the impact of the cordon sanitaire on the decline of the VB. This study shows that although populist radical right parties might not perform well in government, they will face difficulties too if they stay in permanent opposition, because they become perceived as irrelevant in the long run. © 2011 Macmillan Publishers Ltd.