Examining justice-level determinants of party dissolution decisions can reveal how high Courts may influence the public choice by constraining the representation of political ideologies. We argue that Constitutional Court justices strategically engage in politics through party dissolution cases, and justices ‘en garde’ act to guard the regime against anti-establishment ideologies. As a graveyard of political parties, Turkey is an appropriate case to study this claim. By introducing a unique dataset, we demonstrate that communist, religious and ethnic parties in Turkey with considerable public support are more likely to be dissolved by justices having an activist and pro-status quo ideological stance.