Today brings word of a fourth Britain-wide voting intention poll to have been wholly conducted after Jeremy Corbyn became Labour leader, this time a telephone poll from Ipsos-Mori. Once again, the Scottish subsample figures are entirely typical of what we've been used to over the last year or so : SNP 53%, Conservatives 22%, Labour 19%, Liberal Democrats 4%. That's in spite of the fact that Labour support is holding up remarkably well south of the border - across Britain, they trail the Tories by just five points.
We'll have to wait for a full-scale Scottish poll to be sure, but the evidence seems to be gradually mounting that Corbyn hasn't been a game-changer in Scotland so far. Clues to why that may be the case can be found in Ipsos-Mori's supplementary questions, where the Scottish subsample offer a verdict on Corbyn that doesn't differ a great deal from the English sample. For example, 75% of respondents in England say that Labour is "divided", compared with 72% in Scotland. And we know that parties perceived as being disunited rarely win elections.
Is there any glimmer of hope for Scottish Labour ahead of next May? The position on Trident seems to have been thrown up in the air yet again, with the possibility of a conference vote next week, and Corbyn confirming that a vote to scrap Trident would be recognised as altering official party policy. That might allow Kezia to backtrack on her self-harming "multilateralist" stance almost in spite of herself. Scottish Labour really do need to slaughter some sort of sacred cow to get the idea across that they've changed, and in the absence of a Damascene conversion on independence or Devo Max, nuclear disarmament looks like the most promising possibility.
However, Stephen Bush of the New Statesman believes that both sides of the debate may shy away from a vote next week, because they are both unsure of winning. The anti-Trident camp reckon they'll have a better chance next year when they can make sure they send the right sort of delegates to conference, and presumably the pro-Trident camp reckon Corbyn might be gone by next year and the issue won't arise. Basically, it could seem to be in the best interests of almost everyone to have a year's delay - except Scottish Labour, who have an election to fight in just eight months' time.