In this paper I study the way Kant received and solved the problem of the unity of the political will. I propose that Kant distances himself from the modern paradigmatic foundations of sovereignty principally with his theses of the ideality of the general will (topic of section II) and of the apriority of the justification of popular sovereignty (section III). My interpretative hypothesis is that Kant solves the problem by grounding sovereignty on a conceptual element which is new in the history of political philosophy, i. e., the a priori unified omnilateral will. In section IV I explain why my reading of the ideality of the general will can respond to some seemingly plausible objections arising from Kant´s own texts and how it works facing concrete political states of affairs.