Details of the latest AV-referendum polls (by four of the main pollsters) contrasted over at politicalbetting.com: here ...
... interesting that YouGov continue to ask a question that's at variance with the actual ballot paper question?
Come on YouGov; surely now time to ask that actual question:
“At present, the UK uses the first past the post system to elect MPs to the House of Commons. Should the Alternative Vote System be used instead?”