Resumen: This article discusses the Kantian component in the theory of deliberative democracy. It begins claiming that Kant not only incorporates individual rights but also the idea of popular sovereignty: This author values democracy; however, a system of principles has normative priority over the practice of collective self-determination. The text later shows that Habermas’s theory of deliberative democracy elaborates a Kantian justification. Thus, it does not reconstruct the balance between rights and democracy as it claims to do; it rather builds an argument similar to Kant’s.