The monarchy of Canada is at the core of Canada's constitutional federal structure and Westminster-style parliamentary democracy. The monarchy is the foundation of the executive (Queen-in-Council), legislative (Queen-in-Parliament), and judicial (Queen-on-the-Bench) branches of both federal and provincial jurisdictions. The Queen of Canada (and head of state) has been Elizabeth II since 6 February 1952. The official style of the monarch is "By the Grace of God of the United Kingdom, Canada and Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith."