Could be a fall vote.

Unfortunatley for the Harpocrits, they have peaked in the polls. The next set of polls will be after the Liberal Convention and the blue paint brush that sweeped the U.S will most likely put the Liberals in the lead, if not in majority territory. It will most likely take until February for the Liberal numbers to level off, too long for the Harpocrits to get a microwave majority. A fall election will allow them to look to Ontario, now that they have tanked in Quebec. Too bad Ontarians with be going to the polls in October.
It could still be a spring vote. Harper's lust for power could make him roll the dice and try to go when the Liberals have no money and still are still fresh from there leadership vote. He will then try to bring up Gomery, or have something else in the news to mess with people's emotions, which is all the Harpocrits ever do.

Prediction, Jack Layton teams up with Harper to hold onto his pathetic 29 seats. This will let him think that he could still become Prime Minister in some post-apoctolyptic Canada.