OmegaCanadian, but not a Canadian (UK native here). I like Max, but first-past-the-post is always a mountain to climb. I think if he focuses on one or two pressure points (immigration is an obvious choice), he at the very least can score wins from forcing the hand of the established Conservatives.

This was the UKIP tactic and it worked well in the end, but it depended on the Tories being the "natural party of government" in the UK, and Labour heartlands also being tempted by UKIP messaging. I'm not sure how the Liberal vote breaks down in Canada, but I'm assuming you don't have sufficient petty-bourgeois types for that on its own to carry an election for them, and that the old Left of the industrial heartlands is going to be very much in play for a movement in the economic centre and social right.