Front-runner Mark Carney and underdog Chrystia Freeland, both established, centrist policymakers, are vying to succeed Justin Trudeau amid grave threats to Canada from the United States.

Former Bank of England governor Mark Carney and former Deputy Prime Minister Chrystia Freeland are considered frontrunners in the race.

Canada's Liberal Party will announce Prime Minister Justin Trudeau's successor on Sunday as both party chief and head of the country's government in the midst of a trade war with the United States that could cripple the Canadian economy.

Canada’s governing Liberals are set to choose a replacement for Prime Minister Justin Trudeau. The announcement will come as the country deals with U.S.

Frontrunners include Chrystia Freeland and Mark Carney, who are making the case they can guide Canada through domestic and international issues. At the top of the list: mounting trade tensions with the United States.

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Jackie Northam is NPR's International Affairs Correspondent. She is a veteran journalist who has spent three decades reporting on conflict, geopolitics, and life across the globe - from the mountains of Afghanistan and the desert sands of Saudi Arabia, to the gritty prison camp at Guantanamo Bay and the pristine beauty of the Arctic.