The federal Conservatives are under mounting pressure to hold a leadership vote as the party faces a backlash from its own ranks.
The party’s internal poll suggests the Conservatives could lose six of the 11 seats up for grabs in a race to replace Prime Minister Justin Trudeau.
The survey, released Monday, also shows the Conservatives would likely lose four seats.
The poll also found the Liberals are leading the race in Alberta, with the NDP holding a five-point lead in Quebec.
The Liberals hold a six-point advantage in Atlantic Canada, according to the survey.
The Tories have a two-point edge in Ontario and a one-point deficit in the rest of Canada.
The Conservatives are now down six seats to 15 in the 338-member House of Commons.
The NDP is leading in Alberta and Quebec, but the Liberals have a nine-point and two-points lead in Atlantic provinces, the survey showed.
The Conservative leadership race could be among the most divisive in modern history.
The new poll suggests Mr. Trudeau could face a challenge to his leadership as he attempts to fend off an onslaught of negative headlines over the past year.
Some of those negative headlines include a report in The Globe and Mail suggesting he had sexually harassed women while in office.
The allegations have forced the resignation of many of his closest advisers and led to an unprecedented campaign by the Liberals.
Mr. Cameron, the former Conservative MP who is now a columnist for The Globe, told The Globe’s editorial board on Sunday that he is not worried about losing his job.
“If the Conservatives don’t like what I say, they’re going to do it,” he said.
“The truth is, I’m not going to be out of a job.”
He said his family is supportive and the “vibrant energy” he has shown since winning his seat has been a “positive” factor in his decision to seek the job.
He has been an outspoken critic of the Liberals, saying they’ve lost touch with their base.
But he said he’s “very comfortable” in the job as the Conservatives look to improve their image in the province.
“I’m not looking to change the way they think, I want them to think I’m the best possible person to lead this country,” he told The Canadian Press.
“That’s what I’ve done over the years, so I think it’s a matter of confidence in the people who are supporting me.”
The Globe poll was conducted on March 15 and 16 among 1,000 Canadians aged 18 and older.
A margin of error is plus or minus three percentage points, 19 times out of 20.