Although YouGov have yet to match ICM by producing a poll showing the Tories level-pegging with Labour, the latest one does show Labour's lead down to a wafer-thin three points. More significantly, we're provided with a breakdown of where voters for the three main London parties in 2010 have gone to since. This offers a particularly useful insight into what type of people are currently in the UKIP column. Really the only surprise here is that there are no surprises at all -
15% of people who voted Conservative in 2010 now support UKIP.
6% of people who voted Liberal Democrat in 2010 now support UKIP.
4% of people who voted Labour in 2010 now support UKIP.
So the conventional wisdom is borne out by this poll - if we can assume that perhaps half of current UKIP supporters will drift back "home" to their previous party by the time of the general election (a reasonable assumption unless Farage is given a place in any TV leaders' debates that may take place), then Labour no longer have a lead in any meaningful sense.
Incidentally, there's no reason to imagine that switchers from Conservative to UKIP are so scunnered with their former party that they're more likely to go the whole hog and vote Labour rather than return to the Tory fold. This poll actually shows that the Conservatives have more 2010 Labour voters in their column at present than Labour have 2010 Tory voters. In spite of his relentless march to the right, Miliband seems to be utterly failing to appeal to former Tory supporters - his slim lead is an artificial product of the UKIP advance and the Lib Dem collapse.
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Simply because I'm so impressed that someone actually sent me a personal tweet to promote their Edinburgh Fringe show, I may as well give it a quick plug. It looks quite intriguing - it's called The Confessions of Gordon Brown.
"Gordon Brown hilariously exposes the darkest secrets of being Prime Minister, the stab-in-the-back plotting, the betrayals and most importantly - the hair gel. Love him or loathe him, Gordon candidly reveals what it takes to knife your way to the top and rule a nation. And how his dream of power all went wrong. New play by acclaimed Scots Emmy-nominated writer and director Kevin Toolis in a manyrivers production."