Today Cameron turned the mockery treatment on Nadine Dorries, his latest political foe. There is nothing more dangerous in politics than descending into a figure of fun.
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Ed Balls, Labour's shadow chancellor, criticises George Osborne's willingness to consider a cut to the top rate of tax.
Brendan Barber, TUC general secretary, criticises "monstrously unfair" suggestions that the 50p tax rate should be dropped.
A Treasury spokesman reaffirms the government's commitment to the 50p tax rate.
Alistair Darling, former Labour chancellor, tells the BBC that removing the 50p tax rate would be grossly unfair.
Letter from 20 economists to the Financial Times calling for the 50p tax rate to be scrapped.