The Volksunie, partly from the opposition and partly from its participation in cabinet/coalitions made an important contribution to the processes of state reforms that remodeled Belgium in the 80's and 90's into a federal state. The party strongly introduced the federalist ideas in the political arena. In the seventies it played a pro-active role in the negociations with the French interlocuteurs. Although these negociations did not succeed, the solutions advocated in that period went on as possible outcomes for later negociations and played a catalyst role. When taking part in the cabinets either the national and for the Flemish cabinets in the 80's and the 90's, its minister(s) advocated and carried on a maximalizing federalist policy. Inside and outside the party, it was not easy to perform this policy. Even the electorate did not reward the party that much for its achievements, which can be summarized as an undeniable contribution to the federal state reform of Belgium.