The party failed to win a seat in the French National Assembly in the 1956 elections, and split into two factions later in the year over the issue of affiliation with the African Democratic Rally (RDA); former BPA leader Justin Ahomadégbé-Tomêtin became head of the dominant RDA faction, whilst Alexandre Adandé and former UPD leader Émile Derlin Zinsou headed the smaller UDD-Convention.[3]