In a sense the whole 60% thing may now be academic, though. It was only ever a point of discussion because of the suspicion that the SNP were using an unattainable 'target figure' as an excuse for putting off an independence referendum indefinitely. That no longer seems to be a danger, because Keith Brown stated yesterday that independence is now the "settled will" of the Scottish people. Those were clearly very carefully chosen words, and strongly imply that the 52-58% we've seen in recent polls is 'enough' as far as the SNP leadership is concerned. (Although I'm not sure if Andrew Wilson was trying to push back against that when he described the people's will as "settling" rather than "settled".)
When John Smith famously described devolution as Scotland's settled will, he meant that support for a Scottish Parliament was astronomically high, that it hadn't changed for many years, and that there was therefore no need to hold another referendum to test public opinion. Ironically, none of those points apply to the current situation - it's a mere seven months since a poll last had No in the lead, so it can scarcely be said that public opinion is no longer subject to fluctuation or change. And I think we can safely assume that Nicola Sturgeon won't be using the Yes lead in the polls as a justification for declaring independence without a referendum. But however dubious the usage of the words "settled will" may be, it's still incredibly heartening to hear them being used.
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NEW CROWDFUNDER: On Saturday I launched a fundraiser for the next Scot Goes Pop poll on independence, which I intend to commission at some point between now and Christmas. If you'd like to donate, please click HERE.