The Lib Dems have been wrong on the biggest question of the hour

Those serial chancers the Lib Dems probably thought being anti-Tory and siding with Labour on carrying running of the nations credit card for a few months was a smart move. After all it allowed them to stir endlessly and smear shamelessly.

But now, just one week before polling day, the weak point of that argument becomes clear.

Its always been known about, and it was Labour's chancellor Alistair Darling who put it best when he described the UK skating in thin ice which will suddenly give way. Once the cracks start its just a moment till your under the freezing water. No time to change your mind.

Events in Europe show how real that risk is.

Labour and the Lib Dems want to try our luck on the ice, because it offers themselves the best political returns.

The Conservatives have argued that reductions in over spending need to happen now, not next year. Like the Irish we want to set about safeguarding our country from calamity. The Lib Dems and Labour have chosen the Greek route.

David Cameron must crush Nick Clegg with this tonight. Labour is finished, but the Lib Dems could yet finish the UK with their selfish and ignorant economic policy. This is not a local council election where the traditional shameless Lib Dem stirring and opportunism can be tolerated any longer.

Vote Conservative - whilst there's still time and you've only heard the ice creek, not crack.