Deliberative minipublics—participatory processes combining civic lottery with structured deliberation—are increasingly presented as a solution to address a series of problems. Whereas political theory has been prolific in conceiving their contributions, it remains unclear how the people organizing minipublics in practice view their purposes, and how these conceptions align with the theory. This paper conducts a thematic analysis of the reports of all the minipublics convened in Belgium between 2001 and 2021 (n = 51) to map whether and how justifications coincide with the theory. The analysis reveals an important gap: minipublics are in practice predominantly presented as contributions to policymaking, while more deliberative functions remain peripheral. Some common practical purposes also remain under-theorized, in particular their capacity to bridge the gap between citizens and politics. This desynchronization, combined with a plethora of desired outcomes associated with minipublics, indicates the creation of a minipublic bubble which inflates their capacity to solve problems.
