The membership was set by the 1984 federal election on September 4, 1984, and it only changed slightly due to resignations and by-elections prior to being dissolved before the 1988 election.

It was controlled by a Progressive Conservative majority under Prime Minister Brian Mulroney and the 24th Canadian Ministry.

The Official Opposition was the Liberal Party, led by former prime minister John Turner.

Bold indicates parties with members elected to the House of Commons.

Bold indicates parties with members elected to the House of Commons.