Tories surge to record lead
A new YouGov poll for the Sun tomorrow has topline figures, with changes from their last poll, of CON 49%(+5), LAB 23%(-3), LDEM 17%(nc). This is the first poll conducted wholly after both the local election results and Boris Johnson's victory in London, though Populus's poll was partially conducted after the mayoral results.
The 26 point lead is obviously in a different league to every poll that's gone before, on a uniform swing it would produce a Conservative majority of 272 (though obviously, in the vastly unlikely event that such a lead occured at a general election all bets would be off and who knows what freakish result would actually occur). It's the sort of lead that ICM - the only pollster whose figures from back in 1992-1997 are comparable to their figures today - was recording for the Labour party when the Conservative party was flat on the canvas back in 1995.
As ever, we need to be cautious about any poll that shows large shifts of support. This one is explicable - big election victories like the local elections last week often have a halo effect, the winner suddenly has the aura of victory about them, the loser the scent of defeat. Another good example are the polls from straight after the Lib Dem victory in the Brent East by-election back in 2003, when the aura of success about them briefly saw them leap to joint first place in the polls on 31%.
They soon fell back, and if that's what's going on here the Tories will fall back too; I personally find it hard to believe they'll stay at quite this level anyway. Alternatively, the local election defeat may have been the trigger for a real change in public attitudes towards Labour, confirming an image of them as past it and ready to be kicked out.
A third possibility of course, is that this is just a freak result. Remember Populus's poll earlier this week showed no such similar jump in the Tory lead. YouGov normally show the largest leads, so I doubt other companies will match the scale of this lead, but we'll have to see if they show the same trend towards even larger Conservative leads.
UPDATE: The Sun says this is the lowest Labour have ever sunk in the polls since records began. Is it? As far as I tell it equals their lowest rating ever. There was also a Gallup poll in December 1981 that put them on 23%.
UPDATE 2: Seems it's even lower than December 1981. Apparently that Gallup poll actually had Labour on 23.5%, so this really is the lowest since records began.