This article covers the history of the New Democratic Party of Canada.

20th century

Origins, early history, and Tommy Douglas

In 1956, after the birth of the Canadian Labour Congress (CLC) by a merger of two previous labour congresses, negotiations began between the CLC and the Co-operative Commonwealth Federation (CCF) to bring about an alliance between organized labour and the political left in Canada. In 1958 a joint CCF-CLC committee, the National Committee for the New Party (NCNP), was formed to create a "new" social-democratic political party, with ten members from each group. The NCNP spent the next three times laying down the foundations of the New Party. During this process, a large number of New Party Clubs were established to allow like-minded Canadians to join in its founding, and six representatives from New Party Clubs were added to the National Committee. In 1961, at the end of a five-day-long Founding Convention which established its principles, policies, and structures, the New Democratic Party was born and Tommy Douglas, the long-time CCF Premier of Saskatchewan, was elected its first leader. In 1960, before the NDP was founded, one candidate, Walter Pitman, won a by-election under the New Party banner. Supporters of the New Democratic Party are sometimes referred to as "Dippers".

The influence of organized labour on the party was reflected in the party's conventions, as affiliated unions sent delegates on a formula based on their number of members. Even after the party adopted a model of direct election by party membership, labour unions received a reserved 25% of the vote. This carve out was eliminated ahead of the 2012 New Democratic Party leadership election.

The party had one non-union affiliate, the Woodsworth-Irvine Socialist Fellowship, a carry-over from the old Alberta CCF, in existence up to 2007.Democracy and Socialism Essays in honour of Grant NotleyMack Penner, "Socialist Survival: The W-ISF and the Preservation of Radical Thought in Alberta" in Bear, Hannant and Patton, Bucking Conservatism (2021), p. 171-186

Leadership of David Lewis

Under the leadership of David Lewis (1971–1975), the NDP supported the minority government formed by Pierre Trudeau's Liberals from 1972 to 1974, although the two parties never entered into a coalition. Together they succeeded in passing several socially progressive initiatives into law such as pension indexing and the creation of the crown corporation Petro-Canada.

In 1974, the NDP worked with the Progressive Conservatives to pass a motion of non-confidence, forcing an election. However, it backfired as Trudeau's Liberals regained a majority government, mostly at the expense of the NDP, which lost half its seats. Lewis lost his own riding and resigned as leader.

Leadership of Ed Broadbent

Under Ed Broadbent (1975–1989), the NDP played a critical role during Joe Clark's minority government of 1979–1980, moving the non-confidence motion on John Crosbie's budget that brought down the Progressive Conservative (PC) government, and forced the 1980 election that brought the Liberal Party back to power.

The result in 1980 created two unexpected results for the party: The first was an offer by Trudeau to form a coalition government to allow for greater Western representation in Cabinet and a "united front" regarding the upcoming Quebec referendum. Broadbent, aware that the NDP would have no ability to hold the balance of power and thus no leverage in the government, declined out of fear the party would be subsumed.

The second was Trudeau's Canada Bill to patriate the Constitution of Canada unilaterally and to bring about what would become the Canadian Charter of Rights and Freedoms. Broadbent endorsed the initiative, which was directly opposed by the NDP government of Saskatchewan and many of the party's Western parties and members, creating severe internal tension. Broadbent would act as a moderating influence on Trudeau during the debates, and the eventual compromise that brought about the Constitution Act, 1982 was partially authored by Saskatchewan NDP Attorney General and future premier Roy Romanow.

In the 1984 election, which saw the Conservatives win the most seats in Canadian history, the NDP won 30 seats, only one behind the 31 it won in 1972. The governing Liberals were decimated, falling to 40 seats in what was at the time the worst defeat of a sitting at home at the federal level. The NDP fared far better than expected, considering the Tories won the biggest majority government in Canadian history. Third parties historically do not do well in landslide election contests. More importantly, they were only 10 seats behind the Liberals—the closest the party and its predecessors had ever gotten to the two major parties up to that point. It was also the best performance for a third party in almost 60 years. This led to some talk that Canada was headed for a UK-style Tory-Labour division, with the NDP pushing the Liberals into oblivion. Afterwards, Broadbent himself consistently out-polled Liberal leader John Turner and even Prime Minister Brian Mulroney.

On July 20, 1987, the NDP swept three by-elections in Newfoundland, Ontario, and the Yukon, picking up two formerly Conservative seats and holding one NDP seat. These by-elections brought Audrey McLaughlin to the House of Commons as the MP for Yukon.History of Federal Ridings since 1867

The NDP elected a record 43 Members of Parliament (MPs) in the election of 1988. The Liberals, however, had reaped most of the benefits of opposing the Canada–United States Free Trade Agreement to emerge as the dominant alternative to the ruling government. The Conservatives' barrage of attacks on the Liberals, as well as vote-splitting between the NDP and Liberals, helped them win a second consecutive majority. In 1989, Broadbent stepped down after 20 years as federal leader of the NDP.CBC News Indepth: Ed Broadbent

Decline

At the party's leadership convention, former B.C. Premier Dave Barrett and Audrey McLaughlin were the main contenders for the leadership. During the campaign, Barrett argued that the party should be concerned with western alienation, rather than focusing its attention on Quebec. The Quebec wing of the NDP strongly opposed Barrett's candidacy, with Phil Edmonston, the party's main spokesman in Quebec, threatening to resign from the party if Barrett won. Barrett's campaign was also hurt when leadership rival Simon De Jong announcing his endorsement of McLaughlin before the vote, after having privately pledged to support Barrett. McLaughlin ran on a more traditional approach, and became the first woman to lead a major Federal political party in Canada, winning on the fourth ballot.

Although enjoying strong support among organized labour and rural voters in the Prairies, McLaughlin tried to expand their support into Quebec without much success. In 1973, the Quebec New Democratic Party adopted a sovereigntist platform and severed its ties with the federal NDP. Under McLaughlin, the party did manage to win an election in Quebec for the first time when Edmonston won a 1990 by-election. The party had briefly picked up its first Quebec MP in 1986, when Robert Toupin crossed the floor from the Tories after briefly sitting as an independent. However, he left the party in October 1987 after claiming Communists had infiltrated the party.

The NDP chose to align itself with the Conservatives and Liberals on the "no" side of the Charlottetown Accord referendum in 1992. Barrett reluctantly endorsed it to comply with party policy (he opposed the Meech Lake Accord in 1987), but later referred to the NDP's support for the Accord as a mistake. Edmonston, a Quebec nationalist, frequently clashed with his own party over this position on Canadian federalism, and did not run for re-election.

The NDP was routed in the 1993 election. It won only nine seats, three seats short of official party status in the House of Commons. Several factors contributed to this dramatic collapse just one election after winning a record number of seats and after being first in opinion polling at one point during the previous Parliament. One was the massive unpopularity of NDP provincial governments under Bob Rae in Ontario and Mike Harcourt in British Columbia. Not coincidentally, the NDP was routed in these provinces; it lost all 10 of its Ontario MPs and 17 of its 19 British Columbia MPs—more than half of its caucus. The Ontario NDP would be soundly defeated in 1995, while the British Columbia NDP recovered and won reelection in 1996.

The NDP was also indirectly hampered by the collapse of the Progressive Conservatives, who were cut down to only two seats. Exit polls showed that 17% to 27% of NDP supporters from 1988 voted Liberal in 1993. It was obvious by the beginning of October that Liberal leader Jean Chrétien would be the next prime minister. However, the memory of 1988's vote splitting combined with the tremendous antipathy toward the PCs caused NDP supporters to vote Liberal to ensure the Conservatives would be defeated. Many voters in the NDP's traditional Western heartland also switched to the right-wing Reform Party of Canada. Despite sharp ideological differences, Reform's populism struck a chord with many western NDP supporters. In Ontario, fear of the Reform Party and anger at Rae helped cause NDP supporters to vote Liberal. Barrett's warnings about Western alienation proved to be prophetic, as the rise of the Reform Party replaced the NDP as the protest voice west of Ontario.

Into the 21st century Recovery

The party recovered somewhat under new leader Alexa McDonough, electing 21 New Democrats in the 1997 election. The NDP made a breakthrough in Atlantic Canada, unseating Liberal ministers David Dingwall and Doug Young. The party was able to harness the discontent of Maritime voters, who were upset over cuts to employment insurance and other programs.

Afterwards, McDonough was widely perceived as trying to move the party toward the centre of the political spectrum, in the Third Way mode of Tony Blair. Union leaders were lukewarm in their support, often threatening to break away from the NDP, while Canadian Auto Workers head Buzz Hargrove called for her resignation. MPs Rick Laliberté and Angela Vautour crossed the floor to other parties during this term, reducing the NDP caucus to 19 seats.

In the November 2000 election, the NDP campaigned on the issue of Medicare but lost significant support. The governing Liberals ran an effective campaign on their economic record and managed to recapture some of the Atlantic ridings lost to the NDP in the 1997 election. The initial high electoral prospects of the Canadian Alliance under new leader Stockwell Day also hurt the NDP as many supporters strategically voted Liberal to keep the Alliance from winning. The NDP finished with 13 MPs — just barely over the threshold for official party status.

The party embarked on a renewal process starting in 2000. A general convention in Winnipeg in November 2001 made significant alterations to party structures, and reaffirmed its commitment to the left. The party also saw the rise of the New Politics Initiative during this time. In the May 2002 by-elections, Brian Masse won the riding of Windsor West in Windsor, Ontario, previously held for decades by a Liberal, former Deputy Prime Minister Herb Gray.

Rise under Jack Layton

McDonough announced her resignation as party leader for family reasons in June 2002, and was succeeded by Jack Layton. A Toronto city councillor and recent President of the Federation of Canadian Municipalities, Layton was elected at the party's leadership election in Toronto on January 5, 2003, defeating his nearest rival, longtime Winnipeg-area MP Bill Blaikie, on the first ballot with 53.5% of the vote.CBC News - Indepth Backgrounder: NDP Leadership Race