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.

As Justin Trudeau begins the transition of power to new Liberal leader Mark Carney, a candid photo of Trudeau playfully carrying his House of Commons chair has gone viral. The internet praised Trudeau's humor as he prepares to step down,