You're right about Chong, he has a high hurdle to jump in May but if he can get past that, he'll be on an even playing field with Trudeau in terms of social policy/inclusiveness, but his policy crown jewel - the revenue-neutral carbon tax - will leave a heck of a lot more money in people's pockets than Trudeau's carbon tax.  In addition, he has credibility as a reformer if voters are still after that.