The regions of which the chairmen of parliament are seated in the Calre, all belong to the European Union and have legislative power. This last criterion entails the Calre interpreting the concept of "region" more strictly than the definition in the EC-charter for Regionalisation, accepted by the European Parliament on 18 November 1988. This charter describes a region as a territory that forms an obvious entity seen from a geographical viewpoint (or an equivalent grouping of territories that have a continuity together) and of which the population has certain characteristics in common and wishes to protect and develop the specific identity. (...) (Cf. OJC 326 of 19 December 1988, appendix, article 1.1, p. 296). By adding the condition of legislative power to this, the Calre prevents a composition that is too heterogeneous and that would make it impossible to aim for common objectives.
74 regions from 8 countries form the Calre. Below you can look up per country which regions are Calre-members.