She had succeeded former permanent leader Erin O'Toole when the party declared non-confidence in his leadership.

The leader of the Opposition is entitled to the same levels of pay and protection as a Cabinet minister and is often made a member of the King's Privy Council, generally the only non-government member of the House of Commons afforded that privilege.

In the House of Commons seating plan, the leader of the Opposition sits directly across from the prime minister.

[6] Two leaders of the Opposition have died in office: Wilfrid Laurier in 1919 and Jack Layton in 2011.

[8][NB 1] The Official Opposition Shadow Cabinet in Canada is composed of members of the main opposition party and is responsible for holding the Government to account and for developing and disseminating the party's policy positions.