Joe Clark in the context of "John Crosbie"

The Progressive Conservative Party of Canada (PC; French: Parti progressiste-conservateur du Canada) was a centre to centre-right federal political party in Canada that existed from 1942 to 2003.

From Canadian Confederation in 1867 until 1942, the original Conservative Party of Canada participated in numerous governments and had multiple names. In 1942, its name was changed to the Progressive Conservative Party under the request of newly elected party leader Premier John Bracken of Manitoba, a former member of the Progressive Party of Manitoba. In the 1957 federal election, John Diefenbaker carried the party to their first victory in 27 years and the following year, led the party to the largest federal electoral landslide in history. During his tenure, human rights initiatives were achieved, most notably the Bill of Rights. In the 1963 federal election, the party lost power and would not regain it until 1979, when Joe Clark led the party to a minority government victory. The party lost power just nine months later and in 1983, Clark lost his leadership role to Brian Mulroney, who helped the PC Party gain popularity in Quebec. Mulroney won back-to-back majority governments in 1984 and 1988, and during his tenure, major economic reforms such as the North American Free Trade Agreement and the goods and services tax (GST) were introduced.

The 1976 Progressive Conservative leadership election was held at the Ottawa Civic Centre in Ottawa on February 22, 1976, to elect a leader of the Progressive Conservative Party of Canada to replace Robert Stanfield, who had resigned after losing the 1968, 1972, and 1974 elections. It unexpectedly elected Joe Clark, a 36-year-old, little-known PC Member of Parliament from Alberta as the party's new leader. Clark defeated Claude Wagner on the fourth ballot of the convention by a margin of 65 votes.

The convention's delegates were elected by the party's riding associations, along with the party's youth, campus and women's associations. There were also numerous ex officio delegates, including PC Members of Parliament, defeated candidates from the previous election, members of provincial legislatures, members of the party's national executive and the executives of provincial parties affiliated to the federal party. Delegates cast secret ballots, so their votes were not "tied" to any candidate. After each ballot, the candidate winning the fewest votes was removed from the ballot for the next round. Several candidates withdrew voluntarily when it became clear that they would not be able to win.

The 1983 Progressive Conservative leadership election was held on June 11, 1983, in Ottawa, Ontario to elect a leader of the Progressive Conservative Party of Canada (PC Party). At the convention, Montreal businessman and lawyer Brian Mulroney was elected leader on the fourth ballot, defeating former prime minister and party leader Joe Clark.

Joe Clark became party leader in 1976 and led the PCs to a minority government in the 1979 federal election, though lost power only nine months later. In 1981, about a third of delegates were dissatisfied with Clark's leadership and were in favour of holding a new leadership convention. Clark refused to resign as leader and stayed on, though in January 1983 still about a third of delegates were unhappy with Clark's leadership. Clark resigned as leader, triggering a leadership election. If he won, he would have been able to demonstrate a 'clear mandate' to the opponents of his leadership.

Lincoln MacCauley Alexander PC CC OOnt CD QC (January 21, 1922 – October 19, 2012) was a Canadian lawyer and politician who became the first Black Canadian to be a member of Parliament in the House of Commons, a federal Cabinet Minister (as federal Minister of Labour), a Chair of the Worker's Compensation Board of Ontario, and the 24th Lieutenant Governor of Ontario from 1985 to 1991. Alexander was also a governor of the Canadian Unity Council.

Alexander was born in Toronto to Caribbean immigrant parents. After service during World War II, he received a Bachelor of Arts from McMaster University in 1949 before earning his law degree from Osgoode Hall Law School in 1953. A member of the Progressive Conservative Party of Canada, he became the first black Member of Parliament in Canadian history after being elected to the House of Commons in the 1968 Canadian federal election. He was named Minister of Labour in 1979 under prime minister Joe Clark, holding the position until the PC party's defeat in the 1980 election. He resigned from the House of Commons later that year and became Chair of the Worker's Compensation Board of Ontario.

The premierships of Pierre Trudeau occurred from April 20, 1968, to June 4, 1979, and from March 3, 1980, to June 30, 1984. Pierre Trudeau was sworn in as Prime Minister of Canada two weeks after he succeeded Prime Minister Lester B. Pearson as leader of the Liberal Party in the 1968 leadership election.

Trudeau led his Liberals to win a comfortable majority government in the subsequent 1968 federal election. In the 1972 federal election, Trudeau's Liberals were reduced to a minority government, though won a second majority in 1974. In the 1979 federal election, Trudeau's Liberals lost power to a Progressive Conservative led by Joe Clark, who formed a minority government. The PC government collapsed in a vote of non-confidence, triggering the 1980 federal election in which Trudeau's Liberals won a third majority. Trudeau is the most recent prime minister to win four elections and to serve two non-consecutive terms. His tenure of 15 years and 164 days makes him Canada's third-longest-serving prime minister, behind John A. Macdonald and William Lyon Mackenzie King.