Hannah Arendt’s theory of constituent power is radically different from Sieyès’s. Although in both cases constituent power offers a conceptualisation of popular power alternative to sovereignty, in Arendt’s case this alternative coincides withself-government. In Sieyès’s case, meanwhile, it entails the delegation of power to elected representatives. The differences and similarities between these two accounts show the interest and purpose of reconstructing the history of constituent power.

By looking at the language of constituent power and putting its uses into historical perspective, it becomes clear that, in the past two centuries, constituent power has been endowed with different, even opposite, meanings. It follows that the notion of pouvoir constituant has contributed in varying ways to the conceptualisation and institutionalisation of the principle of popular power within the framework of post-revolutionary European states.