Surely with PR every vote counts? Or it should do, to a very large extent. I suppose it depends partly on how the PR system is devised - but in the simplest terms of 50% of the vote gets you 50% of the seats, and 10% of the vote gets you 10% of the seats - the more votes your preferred party gets the more seats it gets. Under PR I simply can't see when I would vote for a party I didn't particularly want - just to keep the party I don't want from winning (like I have almost always done in my voting life because of the constituencies I have lived in).
Precisely. Nobody knows.