The registers of Assembly deliberations (towns, parliaments, provincial estates) in early modern France are often laconic, hence they are usually considered to be useless for studying the practices of deliberation. However, by understanding the wish of unanimity in these institutions, and by a deeper knowledge of the secretaries’ writing practices, it becomes possible to spot the archives that are most likely to give information about the concrete conditions of deliberation. From these sources, we can understand the terms of public speaking in the decision-making process. The analysis of conflict situations is particularly interesting, because these situations are in an ontological contradiction with the original vocation of the assembly, which is to strengthen the cohesion of the community. In that perspective, the beginnings of the war of the League in France (1585-1588) are a very stimulating field of research, because two opposing political parties were face-to-face in the Assemblies: the Royalists and the supporters of the League. By studying the registers of deliberation of the Estates of Provence, the Parliament of Aix, and the municipality of Aix, we can reconstruct the discursive strategies to prevent the latent conflict from breaking out in these assemblies: strategies of ambiguity, hedging, and digressions. Sometimes, however, many actors intentionally chose to crack the fiction of unanimity, in order to impose their opinion. Nevertheless, when tensions became too strong, a process of institutional separation and of mutual relegation allowed both parties to reconstitute the ideal community’s cohesion.