Check out the depressing figures from Fair Vote Canada, and try not to cry. More people voted Green than voted Conservative in Alberta, and yet Alberta elected 27 MP's and the Greens got 0.
Smells like bullshit to me.
I don't see what the difficulty is in changing over to proportional representation. It's not like it isn't used successfully in other countries, so why don't we just ask them how it's done, and voila? Presto change-o, Harper out-o? Or at least back to a weak minority. I like the idea of all the parties represented in the House of Commons, because I don't think any point of view is ever 100% correct. So the more debate and discussion, the more diversity we have in our government, the better.