Deborah Cleland Grey, is a retired Canadian member of Parliament from Alberta for the Reform Party of Canada, the Canadian Alliance, and the Conservative Party of Canada. She was the first female federal leader of the Opposition in Canadian history. She currently serves on the advisory board of the Leaders' Debates Commission.

The Conservative Party of Canada, colloquially known as the Tories, is a federal political party in Canada. It was formed in 2003 by the merger of the two main right-leaning parties, the Progressive Conservative Party and the Canadian Alliance, the latter being the successor of the Western Canadian–based Reform Party. The party sits at the centre-right to the right of the Canadian political spectrum, with their federal rival, the Liberal Party of Canada, positioned to their left. The Conservatives are defined as a "big tent" party, practising "brokerage politics" and welcoming a broad variety of members, including "Red Tories" and "Blue Tories".