In this article, I ask about the extent to which the Conference on the Future of Europe (CoFoE) has advanced democracy in the European Union. I critically engage with the claim that the CoFoE’s success should not be measured by whether it enabled constituent power, or ultimately results in treaty reforms, but by the fact that, by introducing citizens’ assemblies to EU politics, it has laid the foundation for participatory democracy in the European Union. Drawing on established theories of participatory democracy, I argue that this interpretation misses the point. To put forward an alternative view, I revisit James Bohman’s concept of a democratic minimum. The best democratic defence of permanent EU citizens’ assemblies is that they could provide citizens with the capacity to initiate deliberation about common concerns – and thus function as a nucleus for constituent power in the European Union. Nevertheless, the idea should be viewed with caution, as permanent citizens’ assemblies could just as well become a democratic fig-leaf allowing EU institutions to reject calls for fundamental reforms. Much therefore depends on their institutional design.