Where to look for values of a post-communist constitutionalism?

What is the nature of constitutionalism in the member states that joined the European Union in the XXIst century having lived through a socialist/communist past? Does its post-authoritarian character differ from the post-fascist constitutionalisms? Is it co-defined by the stage that the European integration project was in when these countries (re-)gained their sovereignty and adopted liberal constitutions? A positive answer would assist us in reevaluating the role that sovereignty plays in the value orders of the post-communist constitutional culture, especially as by referring to the European integration project the paper aims to assess not only the EEC/EU, but also the Council of Europe/ECHR. The reason the paper looks into the value order is in the latter’s implications for the capacity of the European Union to enforce its values against the governments of the Member States with authoritarian traits.