O’Leary says he decided to support supply management during his campaign.
Why?
“I felt that could be a differentiation point and I’d negotiate it away anyway.” 
So, he would tell the dairy farmers he was in favour of supply management, in order to  get elected, knowing all the time that he would ditch it once he got in office.
What a nasty piece of work this guy is.
All of the loathsome, deceitful,  venal  traits one does not one to see in an elected official,  stuffed into one pompous human.
And he will be advising Bernier? Good luck.