a) drag the whole country leftward, economically
I'm a big supporter of PR (I don't really understand people who aren't -- it gives your vote more weight). I also support more social spending and higher taxes for extreme wealth.
My understanding is that countries that have implemented it have a more fractured government where people complain that it can't get anything done. Given the support that cpc apparently has, and all the "fuck trudeau" people, i'm suspicious that we wouldn't also have a healthy representation the right; people with whom i disagree.
Ugh, i thought this was a question, not a link. So i spent time googling for a good tutorial on floats (because I didn't click the link)....
Now i hate myself, and this post.