Why would any sane Liberal want anything other than the current system? That's how you can get a real majority, and actually get things done. I think the big boys in the Liberal party had a talk with Justin. 

Canada has been well served by the current system.  I believe that regardless of who governs, Liberal or Conservative, we have had good governance overall. And the electorate kicks out those who take their ideology too far.   This is a good system.  What I see in Europe is not.