In this paper we propose an analysis of European populism from the perspective of Quentin Skinner's work. We show how its triptych context-institutional centrality-legality favors a rational analysis of organizations in relation to the propositional value of statements. In this vision, a political phenomenon is understood only in relation to a historical context. After having characterized the issue of institutional decoupling, we shall propose a model exlaining the emergence and spreading of populist movements in Europe.