House leader

Minister, Parliamentary Secretary, Whip, Backbencher: Who Actually Does What in the House of Commons.

The House of Commons is composed of Members of Parliament who are formally equal — one seat, one vote — but who occupy very different roles. Cabinet ministers, appointed by the Prime Minister and sworn in by the Governor General, run government departments and are collectively responsible for government policy. Parliamentary secretaries are MPs appointed to assist specific ministers, a junior role often seen as a stepping stone to cabinet. The government House leader manages the government's legislative agenda and negotiates the Commons calendar with opposition counterparts. Party whips are responsible for caucus discipline — ensuring MPs attend and vote the party line, and administering the rewards and consequences that enforce it. Backbenchers are MPs without a front-bench role; they make up the bulk of every caucus, do constituency work, sit on committees, and provide the votes. The Speaker, elected by secret ballot of all MPs, presides impartially and does not normally vote. Understanding which role an MP holds explains why a parliamentary secretary is whipped even on a "free vote," why a backbencher's private member's bill behaves differently from a government bill, and why front-bench resignations are politically significant.