Survation have a new Scottish referendum poll in tomorrow’s Daily Mail. Topline figures are YES 42%(+5), NO 48%(-2), Don’t knows 11%(-2) (excluding don’t knows it is YES 47%, up 4). This is the first poll since the second Salmond-Darling debate, and on the face of it shows a significant movement to yes since before the debate.

Remember, however, that the previous Survation poll showed a sharp movement to NO. Putting that one aside, this poll is actually very similar to Survation’s longer term trend – their polls in June, July and at the start of August all had YES on 47%, before a sharp drop to 43% in their poll following the first debate. There are two ways you can interpret that – one is that Scottish opinion swung towards NO following the first debate that Darling was deemed to have “won”, and swung back following the second debate that Salmond “won”. The alternative explantion is that the previous Survation poll was just a bit of an outlier and nothing has really changed at all. Anyway, no doubt we will have some more post-debate polls along soon – tabs for the Survation poll are already up here, polls so far are here.