If the Conservatives are to get anywhere, they're going to have to start standing up to the typical Liberal libel that the Conservatives are a sinister fifth-column plotting to destroy society, bring down the State, and hand the country over to America. This means aggressively challenging Liberal orthodoxies instead of kowtowing to them, which is what they're doing right now. The problem with this sort of pink-Tory appeasement strategy is that it places them in a necessarily defensive posture in a necessarily doomed attempt to compete with the Liberals on the latter's own ground; as long as they continue to acknowledge various Liberal shibboleths as somehow sacred, they put themselves in the position of heretics (if liberalism is sacred, what else could a conservative possibly be ?).
This means that Conservatives are going to have start publicly asking just what exactly it is about State-monopolized medicine, gun control, exorbitant taxes, concentration of power in a central State behemoth, etc. that makes them define Canadian nationhood, other than the fact that the Liberals happen to favour them. It needs to be pointed out that Canada existed before these policies did and will continue to exist without them; in short, the Liberal's self-arrogated role as custodian of all that is Canadian has to be challenged. Canadians should also be asked to consider whether or not the party that decimated the military, signed Kyoto, and forfeited our seat at the missile- defense table can be taken at their word when they claim to be nationalists and defenders of Canadian sovereignty. The various standard Liberal doom prophecies also would have to be exposed for the reactionary, authoritarian phantasmogoria that they are; to this end, not a day should go by without the public being reminded that the Liberals made the exact same apocalyptic forecasts concerning the Free Trade deal and they didn't come true then, either. Liberal ideology should also be attacked in its fundamentals; a good starting point would be pointing out that their agenda owes more to the psychotically totalitarian ambitions of Trudeau- who cloaked his will in nationalism just like every other fascist demagogue- than to any authentic "Canadian identity" values.
The Conservatives will never win an election until they start fighting back; since they've so far shown no sign that they're going to (in the last campaign, they actually refused to even run modern attack ads), there should be no election.