London opinion poll surge for the Liberal Democrats

Good news in the latest London political opinion polling for the Liberal Democrats:

The news for Labour is not only bad but bizarre:

Note: this is a London-specific poll and so the figures are representative of the London electorate. London-only figures are often also given in the detailed breakdowns (cross-tabs) of national polls. However, those need to be treated with great caution as not only are the sample sizes much smaller but also the cross-tabs are not weighted. The overall poll is weighted to be accurate representation of the nation’s electorate but the cross-tabs are not weighted to be representative of their sub-areas.