The 27th Canadian Parliament was in session from December 9, 1965 until April 23, 1968. The membership was set by the 1965 federal election on November 8, 1965, and it changed only somewhat due to resignations and by-elections until it was dissolved prior to the 1968 election. It was controlled by a Liberal Party minority under Prime Minister Lester B. Pearson and the 19th Canadian Ministry. Pierre Trudeau succeeded Pearson as party leader and Prime Minister shortly before this Parliament ended for the 1968 national election. There were two sessions of the 27th Parliament.