Not that surprising really. He's saying very little, hasn't articulated any kind of credible alternative policy (ie, we'd be cutting too) and very few people realise he was a key advisor to Brown when labour were wrecking the economy. As long as he says very little then the unpopularity of spending cuts and tax rises the coalition are implementing should see his support rise.
When there is an election and he has to come up with and articulate a plan, then it might be be so rosy for Labour. Jon, It amuses me how you blame Brown for the economy like he had control over a GLOBAL financial meltdown. And I also didn't hear David Cameron rejecting Brown's economic vision in the previous years. As for Ed, I agree he hasn't set out a clear definition of his intentions. And that is one of the reasons why I'm shocked by the poll; I can understand the Lib Dem failure, but the Tories projected result suprises me a lot.