It was controlled by a Liberal Party minority led by Prime Minister Pierre Trudeau and the 20th Canadian Ministry, with the support of David Lewis's New Democratic Party.

The Official Opposition was the Progressive Conservative Party, led by Robert Stanfield.

The government lost the confidence of the house in 1974 when finance minister John Turner's budget was defeated by a vote of 137 to 123,[1] prompting the prime minister to seek dissolution of parliament for the next election.

Members of the House of Commons in the 29th parliament arranged by province.

Two seats remained vacant when the 1974 federal election was called.