O'Leary will go down to ignominious defeat if the CPC is foolish enough to elect him.  His confrontational style won't play well with most Canadians; he has shown profound ignorance of the Charter of Rights with the misintepretation of the notwithstanding clause, and his French is pathetic.

Bernier will scare the bejesus out of anyone who isn't a libertarian, and his fiscal platform clearly reveals ignorance of both economics and basic arithmetic.

If the CPC isn't smart enough to anoint a more moderate candidate, Trudeau and Butts will have a mighty easy job come 2019.  Either of the CPC frontrunnerss will alienate centre rightists, and the NDP has their own problems finding anyone with leadership mettle --  meaning the centre left vote won't see enough of a split to pull of a Harperite victory.