Justin Trudeau, Canada's prime minister-elect and leader of the Liberal Party of Canada, and his wife Sophie Gregoire-Trudeau wave to supporters on election night in Montreal, Quebec, Canada, on Tuesday, Oct. 20, 2015. Trudeau's Liberal Party swept into office with a surprise majority, ousting Prime Minister Stephen Harper and capping the biggest comeback election victory in Canadian history. Photographer: Kevin Van Paassen/Bloomerg
