This is an Accepted Manuscript of an article published by Taylor & Francis in Regional & Federal Studies on 1998, available online: https://www.tandfonline.com/doi/abs/10.1080/13597569808421060.The persistence of a dual identity or compound nationality in Spain reveals the ambivalent nature of the internal ethnoterritorial relations that have existed in recent times. In line with cultural pluralist premises, the emphasis is placed not merely on the distinctiveness. Those relationships of interaction between the different ethnoterritorial groups within the state are also to be underlined. It has been argued that political accommodation to secure political and institutional stability in pluriethnic societies or polyarchies is almost impossib...