(en) All over the world, initiatives to institutionalize deliberative democracy, particularly in the form of citizens’ assemblies, are springing up. Belgium, a small country in the heart of Europe, is probably one of the leading laboratories of this institutionalization process with several permanent citizens’ assemblies. Such institutionalization raises the question of how these assemblies are and should be governed. In order to explore this twofold question, this paper draws lessons from the Permanent Citizen Dialogue in the German-speaking Community and the Mixed Deliberative Committees in the Regional and Francophone Parliaments in Brussels and in Wallonia.