Since the Scottish referendum we’ve had Scottish polls from MORI, Panelbase, YouGov and Survation and they’ve been consistent in showing large leads for the SNP over Labour in Westminster voting intentions. ICM now have a new Scottish poll out and it shows the same as other companies – topline Westminster voting intentions are CON 13%, LAB 26%, LDEM 6%, SNP 43%, UKIP 7%, GRN 4%.

The 17 point SNP lead is smaller than the 24 point lead that Survation recorded at the start of the week (and without tables yet we can’t really speculate why) but would still produce a landslide win for the SNP if repeated in the general election next year. In the Guardian write up they mention some analysis by John Curtice suggesting that Labour may do even worse than uniform swing suggests – looking at responses from areas where Labour was over 25% ahead of the SNP in 2010 shows the Labour vote dropping more there than average. I’d be wary of reading too much into sub-samples of voting intention in a poll that’s only 1000 people to begin with, but nevertheless this seems perfectly plausible for the reasons I mentioned here – when there is a huge drop in support for a political party a uniform swing does start to become untenable due to a floor effect… there are simply too many seats where a party doesn’t have enough support to begin with to lose that much, so they have to lose more votes in places they had more votes.

UPDATE: Full tabs are here, and reallocation of don’t knows did happen and did help Labour – it would have been a nineteen point lead otherwise.

453 Responses to “ICM Scottish poll gives SNP 17 point lead”

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  1. Couper – what was my point?

    As you understood it at least.

  2. @Jim Jam

    I quoted your entire rather cynical point.

    In contrast: It is very clear that Scotland is willing to vote for left wing policies, including policies that would mean the voter would pay more tax. Scotland voted for Michael foot for goodness sake

  3. Nice to see Joan Collins receiving a well-deserved New Year’s honour for….


    err……………………. uh…………………………um….

    …. once being vaguely well-known ???

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