For those who like to keep track of modern Scottish politics, with fascinating implications for the Westminster elections in May, see http://www.telegraph.co.uk/news/politics/SNP/11307543/SNP-on-course-to-hold-balance-of-power-in-Westminster-according-to-new-poll-showing-depth-of-Labours-collapse.html
And for the academic analysis see John Curtice at http://blog.whatscotlandthinks.org/2014/12/murphy-proves-magic-bullet-labour/
20 January update
Scottish Nationalist Party polling for 2015 Election Westminster-
'Meanwhile there was a new Scottish poll from Survation from the Daily Record. Topline Westminster voting intentions with changes from Survation’s previous poll are CON 14%(-2), LAB 26%(+2), LDEM 7%(+2), SNP 46%(-2), GRN 3%(+2), UKIP 4%(nc). (tabs). It shows a small narrowing in the SNP lead, but it was from an extremely large lead last time, so it still leaves them with a huge twenty point lead.'