OTTAWA - Support for the NDP has dropped across Canada at the expense of Liberal gains, including in Quebec where New Democrats are tied with the separatist Bloc Quebecois, says a new poll.

The Abacus Data survey conducted between Nov. 9 and Remembrance Day showed the Conservatives had opened up a seven-point lead over the NDP.

The Conservatives owe thanks to the leaderless Grits for luring support away from the NDP for inching up one point to 36% since September among decided voters.

The NDP sunk six points to 29% and the Liberals jumped five points to 22%.

In Quebec, where the NDP made an historic breakthrough under Jack Layton last year by winning 59 seats, the NDP is now tied with the separatist Bloc Quebecois at 30%, while the Liberals have vaulted eight points to 21% from two months ago.

The Conservatives continue to lead all parties in Alberta and Ontario at 60% and 43% respectively, while the NDP lead in B.C. with 40% support.

In Quebec, the NDP dropped nine points and in Alberta, where Thomas Mulcair has waffled on support for oilsands expansion and won't say where he stands on the completion of the Keystone XL pipeline to the Gulf, support is down 11 points.

David Coletto, CEO of Abacus, said the poll shows comments made by Mulcair after he won the leadership are bearing fruit and that the buzz around Liberal leadership hopeful Justin Trudeau is eroding NDP popularity.

"The results confirm Mulcair's fear the NDP doesn't have deep roots," he said. "The NDP should be very worried that Trudeau may be the one thing to prevent those roots from growing and being seen as the real alternative to Harper."

Coletto said it "would be dream come true" for the Conservatives if the latest numbers hold heading into the 2015 election because of vote splitting.

Abacus polled 1,068 Canadians, using an online survey. The poll participants were chosen at random from an online database of 150,000 volunteers.

The pollster weighted the survey sample by age, gender, region and education level according to the most recent census data.

The pollster's method is widely used and, according to the industry association of which the pollster is a member, is believed to be capable of producing accurate results.

Mark.Dunn@sunmedia.ca

Twitter: @MarkDunnSun