Trudeau won the leadership of the Liberal Party in April 2013 and went on to lead his party to victory in the 2015 federal election, moving the third-placed Liberals from 36 seats to 184 seats, the largest-ever numerical increase by a party in a Canadian general election.
Trudeau vandt lederskabet for Liberal Party i april 2013 og ledte hans parti til sejr ved valget i 2015, hvor de liberale gik fra 36 mandater til 184 mandater, den største forøgelse for et parti ved et canadisk valg.