YouGov Post Budget poll
The Telegraph have published the first voting intention poll since the budget. The topline figures in the YouGov poll, with changes from their last one, are CON 45%(+4), LAB 27%(-7), LDEM 18%(+2). It was conducted between Wednesday and Thursday afternoon.
Needless to say, it shows a collapse in the Labour vote with both the Conservatives and Liberal Democrats benefitting, though the changes are probably slightly exaggerated since the last YouGov poll showed a rather high level of Labour support compared to other recent polls.
Two things are worth noting - first, this isn't necessarily the result of the budget, this is also the first YouGov poll since the "smeargate" story, and some polls were already showing Labour down below thirty.
Secondly, it is possible for instant reaction polls to be too instant. Most of YouGov's responses would have been received on Wednesday, before the print media's pretty hostile reception today and the post-budget discussion of spending cuts. This poll may not be showing the full effect of the budget.