The Liberals remain in front in Quebec, but the NDP has slipped into a tie with the Bloc Québécois in the province, at 24.5% support apiece. Better news for the NDP in British Columbia, however, where they have moved ahead of the Conservatives into second place.
In the Prairies, the Liberals were up 3.2 points and now trail the Conservatives by just 0.5 points. On the other hand, the party dropped 4.9 points in Atlantic Canada. All of that went to the New Democrats, who moved ahead of the Tories in the region.
Note that, while the Liberals are first or second in every part of the country, the governing Conservatives have placed third or fourth in half of the country's six polling regions. However, with good support between the Rockies and the Ottawa River, the party is still an electoral force.
The methodology used to weigh polls can be found here. By including polls in the average, no representation as to the accuracy or equivalency of the methods used is implied, nor should inclusion be seen as an acceptance, endorsement, or legitimization of their results. The weighting scheme takes this partly into account. See here for a complete rundown of the latest polls in Canada (external link).