A referendum that asked citizens whether they wanted to remain within Yugoslavia was held on 9 and 10 November 1991. The parliamentary government of Bosnia and Herzegovina (with a clear Bosniak and Croat majority) asserted that this plebiscite was illegal, but the Bosnian Serb assembly acknowledged its results. On 21 November 1991, the Assembly proclaimed that all those municipalities, local communities, and populated places in which over 50% of the people of Serbian nationality had voted, as well as those places where citizens of other nationalities had expressed themselves in favor of remaining in a joint Yugoslav state, would be territory of the federal Yugoslav state.