Labour lead collapses to 4 points!

According to channel 4 the Labour lead has collapsed to just 4%.

Labour are on 40% (-4), Conservatives on 36% (+3), Liberal Democrats on 13% (NC).

It has to be said the 13% for the Liberal Democrats is not that credible, I expect them to take some of Labour, making this a very close run thing if there were an election now.