This article deals with the process through which party leaders in the Parti Socialiste were selected in the eighties and the nineties. Despite theparty congress's entitlement to elect leaders, the critical factor in winning the leadership has been endorsement by predecessors. G. Spitaels and Ph. Busquin are cases in point. The congress merely serves as a ritual, as a consequence of which the outcome of the vote is highly predictable, influenced as it is by party events and role-expectations. Socialist party leaders have a wide arsenal at their disposal to rule the party in a rather autoritarian way; a classic example being the plebisciteBusquin provoked in 1994 to expand bis power. How, by whom and to what extent they obtain and enforce this autoritarian power are key questions in this study.