For the three party leaders, tomorrow night's performance on the final televised debate could be the most important of their political careers.

The various parties can spin their manifestos whichever way they want but for most people, the key issue is the economy.

To succeed, Messrs Brown, Cameron and Clegg will need to convince the watching public - and I think the BBC debate will attract the biggest audience of the three - that they have what it takes to continue Britain's rise out of the slump of the global recession.

People have been quick to knock the efforts of Gordon Brown and his chancellor Alistair Darling but the fact that one of the banks they bailed out with taxpayers money has now reported a profit should not go unnoticed.

David Cameron and Nick Clegg have differing views on how they would continue the recovery.

Cameron's Conservatives want to cut back public spending to reduce the national deficit, freeze public sector pay and look again at Government schemes which are not fully advanced.

Clegg's Lib Dems, meanwhile, want to redirect £3.1 million of public spending to create 100,000 "green" jobs and split banks investment and High Street arms to stop the risk culture.

Commentators will attempt to dissect the information and try and present the cases for each party but that in itself can confuse the issue further.

That is why tomorrow night's BBC debate is so important and why the leaders must put across what their party's policies mean for everyday folk in the simplest manner possible.

We're getting to the final countdown, and everyone needs to step up their game.

Don't forget to follow me on Twitter.

Just log onto www.twitter.com/AndrewGreavesBN and click the "follow" button for all the latest news.