In 2013, the Liberal Party of Canada held a leadership election to elect a new party leader. The election was triggered by Michael Ignatieff's announcement, on May 3, 2011, of his intention to resign as leader following the party's defeat in the 2011 federal election. On May 25, 2011, Bob Rae was appointed by Liberal caucus as interim leader. The party announced Justin Trudeau as its new leader on April 14, 2013, in Ottawa, Ontario.
Justin Trudeau would go on to become the 23rd prime minister of Canada in the 2015 Canadian federal election in which the Liberal Party won 184 seats, an increase of 150 seats from 34 seats in the 2011 election, the largest-ever numerical increase by a party in a Canadian election.