Does Cameron Understand How PR Works?

This is, I’m afraid, a real question and one to which the answer would appear to be no. Today’s text comes courtesy of John Rentoul and his colleague at the Independent on Sunday, Jane Merrick. On the matter of voting reform here’s what David Cameron has to say:

JM: Is it true you once said if you had to have electoral reform then STV [Single Transferable Vote] would be better than AV [Alternative Vote]?

DC: My problem is I don’t see AV as effective reform, because you keep the constituency link, but you could end up with a more disproportionate result. It seems to me AV doesn’t really do it. I remember from my studies when I was studying under the great Vernon Bogdanor: STV, you can make lots of arguments for it because you are able to choose between candidates of a party so there’s some choice involved. The problem is you lose the constituency link.