The Liberal Party will elect its new leader. Who gets to vote?

The Liberal Party’s board of directors must now set a date for the next leadership race and establish the leadership expenses committee, according to the party’s constitution.

Justin Trudeau’s days as leader of the Liberal Party are numbered after he announced plans to resign once the party elects his successor.

But how does the selection process work in the Liberal Party? And who gets to choose the next leader?

Outside his residence in Ottawa, Trudeau told reporters on Monday of his intention to step down following months of mounting pressure.

“I intend to resign as party leader, as prime minister, after the party selects its next leader through a robust nationwide competitive process,” Trudeau said.

Trudeau said he had informed the Liberal Party president on Sunday evening.

The Liberal Party’s board of directors must now set a date for the next leadership election and establish the leadership expenses committee, according to the party’s constitution.

Trudeau’s election to the party’s leadership in 2013 followed a change in the voting mechanism that gave a new category of non-member “supporters” the same say in choosing a leader as those who pay to become members.

“At that time, for the first time by a federal party in Canadian history, they allowed anybody in Canada (to vote),” said Nelson Wiseman, professor emeritus of political science at the University of Toronto.