In the United States, self-proclaimed ‘democratic socialist’ Bernie Sanders, an independent senator from Vermont running for the Democratic Party’s 2016 presidential nomination, has hit his stride this month — Politico proclaimed it a ‘socialist surge.’

Notwithstanding the thousands of supporters thronging to his campaign events across the country, Sanders holds a very slim chance of defeating against his opponent, former first lady, New York senator and secretary of state Hillary Clinton.

In Canada, however, it’s a different story.

The leftist New Democratic Party (NDP) has surged to a polling lead, giving its leader, Tom Mulcair, a legitimate chance to become Canada’s first NDP prime minister. Make no mistake, if the NDP wins Canada’s October election, it would be a huge milestone for the North American left.

ThreeHundredEight‘s June polling averages give the NDP a slight edge, with 32.6% to just 28.6% for prime minister Stephen Harper’s Conservatives and 26.3% for the Liberal Party. The NDP has a healthy lead in British Columbia and in Quebec, is essentially in a three-way tie in Ontario, leads the Liberals in Alberta and the prairie provinces (a Tory heartland) and leads the Tories in Atlantic Canada (the only remaining Liberal heartland).

On these numbers, the NDP could emerge as the largest party in the House of Commons, though probably not with an outright majority.

It is, of course, still early — the election is more than three months away. But it’s a remarkable reversal of fortune for a party that only recently languished in third place.

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RELATED: Alberta election results —
Conservatives lose 44-year hold on power

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It’s an aphorism of Canadian politics that federal trends don’t extrapolate from provincial trends. But there’s no doubting that the election of Rachel Notley in May as Alberta’s premier has much to do with Mulcair’s recent good fortunes. Notley’s Alberta NDP displaced the Progressive Conservative Party after 44 years in power — and sent Jim Prentice, a Harper ally and former federal minister, who returned from private-sector life to lead Alberta’s ailing PC-led government, back into retirement.

Under the leadership of Jack Layton, the NDP made its first major breakthrough in the 2011 elections. With voters unenthusiastic about Michael Ignatieff’s leadership of the center-left Liberals and with Québec voters in particular tiring of the pro-independence Bloq québécois, the NDP won 103 seats, including  59 of Québec’s 75 ridings. It was enough to make the NDP, for the first time in Canadian history, the official opposition. Tragically, Layton died of cancer less than four months after the election, depriving the party of a figure whose personality and integrity were a key element of the so-called ‘orange crush.’

Mulcair, a moderate with aims of winning over moderate as well as progressive voters, won the leadership in March 2012, dispatching Brian Topp, his more leftist rival. A French Canadian who got his start in the rough and tumble of Québec’s local politics, Mulcair served for 13 years in the provincial assembly and won plaudits as the minister of environment from 2003 to 2006 under Liberal premier Jean Charest. Mulcair made the jump to federal politics during the 2007 election, easily winning a riding from Outremont.

With the Liberals stuck in rebuilding-mode, the NDP took the lead in many surveys throughout 2012. But with the election of Justin Trudeau as the new Liberal leader in early 2013, the NDP’s support tanked — to just barely above 20% in many polls. That’s essentially where Mulcair’s NDP remained for the rest of 2013, 2014 and early 2015.  Continue reading NDP rises to lead as Canadian election approaches →