The article assesses how and to what extent Constitutional Courts dealing with Euro-crisis measures protect or limit parliamentary powers through their case law. The article argues that constitutional case law regarding the Euro-crisis measures permit national constitutional identities to emerge in a more explicit way than in the past. In this respect, Constitutional Courts’ judgments are concerned with parliamentary prerogatives as long as the safeguard and enhancement of the democratic principle is considered part of the national constitutional identity and can prevail, in the specific case in question, over other supreme principles. In particular, two relevant elements may be identified. First, the case law of Constitutional Courts regar...