The imminent selection of Justin Trudeau as Liberal leader could erase gains the New Democrats have made in at least one region of the country — Atlantic Canada. Yet, a spate of provincial polls suggests that Thomas Mulcair may still have a solid base to rely upon in 2015.

The New Democrats under Jack Layton took 30 per cent of the vote in the four Atlantic provinces in 2011, and two years later the party enjoys roughly the same support. But after leading for much of 2012, the federal NDP now averages about 29 per cent in the region. What’s more, the party is locked in a tight race with Conservatives for runner-up status. Liberals have pulled ahead at about 36 per cent support.

The surge the NDP experienced last election might have been built on a foundation of sand. At the provincial level, only the Nova Scotia New Democrats were a major political force after forming government for the first time in 2009. Support for the NDP in the other provinces was minuscule: 10 per cent in New Brunswick in 2010, eight per cent in Newfoundland and Labrador in 2007, and less than four per cent in Prince Edward Island in the 2007 and 2011 elections.

Yet, NDP fortunes have changed greatly in the region.The first hint that New Democrats were on the upswing came in the 2011 provincial vote in Newfoundland and Labrador. The party finished second in the popular vote with 25 per cent, an all-time best for the party. Since then, the NDP in the other provinces has been on a roll.

The Corporate Research Associates released the last quarterly provincial polling for the region yesterday, showing the provincial New Democrats at 26 per cent in New Brunswick and Prince Edward Island, and 39 per cent in Newfoundland and Labrador. On the Rock, that represents an eight-point gain since November’s poll, putting them one point up on the governing Progressive Conservatives. The NDP is up four points in P.E.I. and ranked second, while the party is up seven points in New Brunswick, trailing in third in a close three-way race.

Those are remarkable numbers for the New Democrats, who have never won more than a single seat in any general election in P.E.I. or New Brunswick, or more than two in Newfoundland and Labrador before 2011’s breakthrough.

It puts the federal New Democrats in a better position. Though their provincial cousins are trailing the Liberals in Nova Scotia, at 32 per cent in the polls, they are still doing better than the party did in the 2011 federal election. The provincial New Democrats are also building on the results the federal party got in 2011 in P.E.I. and Newfoundland and Labrador. It has the potential to open up new seats in those two provinces, while the numbers in New Brunswick and Nova Scotia make it more likely they can hold on to 2011’s gains.

The Conservatives shot themselves in the foot in the region with their changes to E.I., and the race is increasingly becoming one between the Liberals and NDP. With the help of Trudeau, the Liberals might only become more ensconced in one of their few reliable regions in the country. But holding on to the seats they currently have in Atlantic Canada, and perhaps adding a few more, should be an important part of any NDP plan for victory in 2015.

Éric Grenier taps The Pulse of federal and regional politics for Huffington Post Canada readers on most Tuesdays and Fridays. Grenier is the author of, covering Canadian politics, polls and electoral projections.

Related on HuffPost:

Loading Slideshow...
  • Little-Known Mulcair Facts

    Here are some facts you may not have known about NDP Leader Thomas Mulcair. (CP)

  • 10. He Used To Be A Liberal

    <a href="" target="_hplink">Mulcair was Minister of Sustainable Development, Environment and Parks</a> in Jean Charest's Liberal government in Quebec. He served in the role from 2003-2006. (CP)

  • 8. He's French (Kind Of)

    Mulcair married Catherine Pinhas in 1976. She was born in France to a Turkish family of Sephardic Jewish descent. <a href="" target="_hplink">Mulcair has French citizenship through his marriage</a>, as do the couple's two sons. (KENZO TRIBOUILLARD/AFP/Getty Images)

  • 7. They Used To Be Friends

    <a href="" target="_hplink">Mulcair left Charest's Liberal government in Quebec </a>after he was offered the position of Minister of Government Services in 2006, an apparent demotion from Minister of the Environment. Mulcair has said his ouster was related to his opposition to a government plan to transfer land in the Mont Orford provincial park to condo developers. (CP)

  • 6. Ancestor Was Premier Of Quebec

    Mulcair's great-great-grandfather on his mother's side was <a href="" target="_hplink">Honoré Mercier, the ninth premier of Quebec</a>. (Public Domain/Bibliothèque et Archives nationales du Québec)

  • 5. First!

    <a href="" target="_hplink">Mulcair was the first New Democrat to win a riding in Quebec during a federal election</a>. He held the riding of Outremont during the 2008 election after first winning the seat in a 2007 by-election. Phil Edmonston was the first New Democrat to win a seat in Quebec, but his win came in a 1990 by-election. Robert Toupin was the very first to bring a Quebec seat to the NDP, but he did it in 1986 by crossing the floor. (Alamy)

  • 4. He's Half Irish.

    <a href="" target="_hplink">Mulcair's father Harry Donnelly Mulcair was Irish-Canadian</a> and his mother Jeanne French-Canadian. His father spoke to him in English and his mother in French -- explaining his fluency in both official languages. (Photo by Spencer Platt/Getty Images)

  • 3. He Votes In France

    Muclair has voted in past French elections, but after becoming leader of the Official Opposition <a href="" target="_hplink">he said he would not cast a ballot in the French presidential vote</a>. (Thinkstock)

  • 2. Young Love At First Sight

    <a href="" target="_hplink">Mulcair met his future wife at a wedding when they were both teenagers</a>. Catherine was visiting from France. They married two years later when they were both 21. (CP)

  • 1. Mr. Angry

    <a href="" target="_hplink">Mulcair was given the moniker in a Maclean's headline</a>, but the new leader of the NDP has long been known for his short fuse. In 2005, he was fined $95,000 for defamatory comments he made about former PQ minister Yves Duhaime on TV. The comments included French vulgarity and an accusation that alleged influence peddling would land Duhaime in prison.

  • UP NEXT: Canadian Politicians Who Have Tried Marijuana

  • Rob Ford

    Toronto Mayor Rob Ford says he has had his <a href="" target="_blank">fair share of marijuana</a>. "Oh, yeah. I've smoked a lot of it."

  • Justin Trudeau

    The federal Liberal leader opened up to HuffPost about his experience with marijuana in August. "Sometimes, I guess, I have gotten a buzz, but other times no. I’m not really crazy about it.”

  • Tom Mulcair

    The Opposition leader's office told HuffPost this summer that Mulcair <a href="" target="_blank">has smoked in the past</a> but not since he was elected to office. Mulcair was elected to the National Assembly of Quebec in 1994.

  • Jim Flaherty

    Said the <a href="" target="_blank">Tory finance minister</a>: "Yeah, in my teenage years... a couple of times, I have to admit: I didn’t like it."

  • Marc Garneau

    The Liberal MP and Canada's first astronaut said he tried marijuana as a <a href="" target="_blank">student in the 1970s in England. </a> "It's not my thing. I stopped because it wasn't doing anything for me."

  • Kathleen Wynne

    The premier of Ontario said she <a href="" target="_blank">smoked pot decades ago</a>. "I have smoked marijuana but not for the last 35 years."

  • Darrell Dexter

    Said the <a href="" target="_blank">premier of Nova Scotia</a>: "Like every other person I knew back in the '70s when I went to university, some of whom are actually in this room, I would have tried it, the same as other people at that time."

  • Christy Clark

    Said the <a href="" target="_blank">premier of British Columbia</a>: "I graduated from Burnaby South Senior Secondary in 1983 and there was a lot of that going on when I was in high school and I didn't avoid it all together."

  • Tim Hudak

    The leader of the Progressive Conservative Party of Ontario admitted he's <a href="" target="_blank">puffed in the past.</a> "I was a normal kid, I had a normal upbringing, a normal life in university. I experimented from time to time with marijuana. It’s a long time ago in the past and in the grand scheme of things."

  • Paul Martin

    The former prime minister of Canada <a href="" target="_blank">told CTV News</a>: "The answer is: I never smoked. I never smoked anything, but there was an earlier time, years ago, when (my wife) made some brownies and they did have a strange taste."

  • Kim Campbell

    The former prime minister admitted while running for the leadership of the Progressive Conservatives that <a href="" target="_blank">she tried weed.</a> "And I inhaled the smoke."

  • Jack Layton

    Said the former NDP leader: "Yes, and some might say I never exhaled."

  • Dalton McGuinty

    The former premier of Ontario said he <a href="" target="_blank">experimented in his teens</a>, but only twice.

  • Brad Wall

    The premier of Saskatchewan said he was an <a href="" target="_blank">"infrequent" user back in university.</a> "It didn't really do anything for me, luckily, because for some, it does lead to other things."