Labour government, 1974–1979
In March 1976, having just turned sixty years old, Wilson resigned as Prime Minister, ending his leadership of the Labour Party after thirteen years, and a total of nearly eight years as Prime Minister. He was replaced by James Callaghan, who had held senior government positions during both of Wilson's ministries, and had served as a Shadow Cabinet member in the early-1960s.
Wilson Mills
He was first elected to Parliament at the Elgin West riding in a by-election on 24 September 1934, replacing Mitchell Hepburn who resigned to run in the 1934 provincial election becoming Premier of Ontario. Mills was re-elected at Elgin in the 1935 federal election and again in 1940. After completing his term in the 19th Canadian Parliament, Mills left federal politics and did not seek another term in the 1945 election.