The article discusses the implications of the well‐known discursive dilemma. The dilemma arises whenever a reasoned decision has to be taken by a collective decision‐maker and generates persistent contradiction between what is defined as collective reason and public opinion. Following Philip Pettit, I argue that collective reason is normatively preferable and that the role of existing constitutional institutions in contemporary democracies is to collectivise reason. However, this makes the frustration of popular will a systematic by‐product of any well‐functioning political process. (...) I argue that the only way out is if individual beliefs are subject to revision during cycles of public deliberations with the responsibility to lead this thrusted upon elected representatives. (shrink)