With the ranked ballot system, the outcome is unpredictable.  Bernier is apparently the front runner, but if he does not have 50% support in the first ballot, he may be overtaken by one of the moderate candidates (e.g. O'Toole, Raitt or Chong).  The latter three may be clustered in various sequences on 'anyone but Bernier' ballots.  Hopefully a moderate choice prevails.