After nearly a decade in power, Canadian Prime Minister Justin Trudeau finally bowed to a chorus of criticism that had become too loud to ignore, announcing his resignation on Monday. Among the loudest critics was one of his most loyal and longest-serving deputies.

Announcing his resignation on Monday, Trudeau said he planned to stay on as prime minister until a new party leader is selected. Who will succeed him — and can they survive a looming no-confidence vote?

Following Justin Trudeau’s resignation, top contenders for the Liberal leadership include Melanie Joly, François-Philippe Champagne, and Anita Anand.