Post-debate Survation poll shows swing to NO

This morning's Scottish Daily Mail has a new Survation poll of Scotland. Referendum voting intention figures with changes from last week are YES 37%(-3), NO 50%(+4), Don't know 13%(-1). Excluding don't knows that works out at YES 43%(-4), NO 57%(+4). Tabs are here.

Survation are one of the companies that have tended to produce some of the better figures for YES. Their last three Scottish polls have shown figures of YES 47%, NO 53%. 43% is the YES campaign's lowest score in a Survation poll since January, before Survation switched their weighting scheme to Holyrood recalled vote.

Normal caveats about any sharp movement in the polls apply, but this the first full natrep Scottish poll since the Salmond-v-Darling debate, so obviously people will look at that four point swing and conclude that the debate has indeed moved public opinion towards NO. I'd urge a little caution - as ever, it is just one poll, all polls have a margin of error, and when other post-debate polls come along they may or may not paint the same picture. This first bit of evidence though suggests the first debate has helped NO.