The Conservative Party of Canada is one of Canada's two dominant federal political parties, generally positioned right-of-centre on the political spectrum. The current party formed in 2003 through a merger of the Progressive Conservative Party and the Canadian Alliance. Conservative positions typically emphasize lower taxes, fiscal restraint, strong national defence, law and order, and market-oriented economic policies, though the party encompasses various factions from progressive to social conservatives. The party has formed government periodically, most recently under Prime Minister Stephen Harper (2006-2015). Provincial conservative parties exist separately, with varying relationships to the federal party. Understanding Conservative positions helps citizens evaluate policy options and election choices.