The Tories' billionaire puppet-master Lord Ashcroft recently conducted a UK-wide mega-poll of Westminster voting intention, with a sample size some eight times larger than a regular poll. That means the size of the Scottish subsample was almost as large as you'd expect for a full-scale Scottish poll. The results make fascinating reading -
Liberal Democrats 6%
There are a couple of important caveats here. Firstly, even a massive subsample is still just a subsample - ie. the figures may not be properly weighted. Secondly, the fieldwork is a few weeks out of date. Nevertheless, given the fact that this a poll that shows a very healthy Labour lead at GB-wide level, these numbers are obviously hugely encouraging.