The "Constitution Act, 1867" incorporated the present-day Government of Quebec, which functions within the context of a Westminster system and is both a liberal democracy and a constitutional monarchy with a parliamentary system. The Premier of Quebec, presently François Legault, acts as head of government and holds office by virtue of commanding the confidence of the elected National Assembly. Québécois political culture mostly differs on a nationalist-vs-federalist continuum, rather than a left-vs-right continuum. Quebec independence debates, in particular, have played a large role in politics. A referendum on sovereignty-association was held in 1980, and one on independence was held in 1995.