Robert Stanfield in the context of Premier of Nova Scotia

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 1968 Canadian federal election was held on June 25, 1968, to elect members of the House of Commons of Canada of the 28th Parliament of Canada.

In April 1968, Prime Minister Lester Pearson of the Liberal Party resigned as party leader as a result of declining health and failing to win a majority government in two attempts. He was succeeded by his Minister of Justice and Attorney General Pierre Trudeau, who called an election immediately after becoming prime minister. Trudeau's charisma appealed to Canadian voters; his popularity became known as "Trudeaumania" and helped him win a comfortable majority. Robert Stanfield's Progressive Conservatives lost seats whereas the New Democratic Party's support stayed the same.

The 1972 Canadian federal election was held on October 30, 1972, to elect members of the House of Commons of Canada of the 29th Parliament of Canada. It resulted in a slim victory for the governing Liberal Party led by Prime Minister Pierre Trudeau, which won 109 seats, compared to 107 seats for the opposition Progressive Conservatives led by Robert Stanfield, making this the closest election in Canadian history in terms of seat count. Trudeau's Liberals experienced a decline in support as a result of rising unemployment.

A further 48 seats were won by other parties and independents. On election night, the results appeared to give 109 seats to the Tories, but once the counting had finished the next day, the final results gave the Liberals a minority government and left the New Democratic Party led by David Lewis holding the balance of power.

The 1974 Canadian federal election was held on July 8, 1974, to elect members of the House of Commons of Canada of the 30th Parliament of Canada. The governing Liberal Party was reelected, going from a minority to a majority government, and gave Prime Minister Pierre Trudeau his third term. The Progressive Conservatives, led by Robert Stanfield, did well in the Atlantic provinces, and in the West, but Liberal support in Ontario and Quebec ensured a majority Liberal government.