Postpublished at 09:08 British Summer Time 30 June
First we're hearing from this morning's panel. Harman accuses the Tories of running a negative campaign and relying on attack ads.
She says Labour has been reassuring people over recent weeks.
Fearnley-Whittingstall says the Tories have been trying to "get a rise out of a soufflé" and says Labour hasn't set out its full plans.
He tells the programme he's been campaigning with the Green Party.
Lewis says the campaign has been challenging after 14 years in power, and that the public still has a "gap in its understanding" about Labour's plans.