First he was "too young", then he was "too posh", but Conservative leadership candidate David Cameron is not even human, according to Rory Bremner.
Tories can 'download' policies, according to Rory Bremner.
The impressionist has suggested the 38-year-old is a political "iPod".
Tories can "download the policy they want" with Mr Cameron, in the way music fans can pick tunes on their machines, he told BBC Radio 4's Today programme.
He was a "blank canvas", like leaders William Hague and Iain Duncan Smith had been in previous contests.
Mr Bremner said the current battle, in which there are five candidates, was marked by "quantity" rather than "quality".
He added: "He [Mr Cameron] is a bit of a blank canvas. The Conservatives don't vote for who they like, but who they don't know."
Mr Bremner's comments follow a barrage of consumerist analogies from the various contenders to replace Michael Howard as Conservative Party leader.
Old Etonian Mr Cameron, who last week argued the Tories needed to change their "brand", said Mr Davis had gravitated towards his stance of "compassionate Conservatism".
Cameron says he's the real thing
He added: "David Davis has definitely moved in that direction, but I would say buy Coca-Cola. If you like Coke, get the real thing."
But Mr Davis later hit back: "I'm Mr Heineken. I say Heineken because what I want to do is [have] a Tory party that reaches the parts of Britain it never reached before."
Not to be outdone, former chancellor Ken Clarke, a keen cigar smoker, said: "I am very laid back. My danger - I'm conscious, one piece of self-analysis that goes on - is that I am almost over laid-back.
"So I relax into things. I'm a bit like that Hamlet advert where the scene has just fallen in, life has collapsed. If I'm being accused of heinous crimes I just light up a cigar and generally relax.
"It has saved me from ever suffering from what I have seen finish off political career after political career which is stress.
"I don't seem to suffer from stress. I quite enjoy it all."
Mr Cameron and Mr Clarke are addressing the Conservative Party's annual conference in Blackpool on Tuesday.
Shadow Foreign Secretary Liam Fox and Shadow Pensions Secretary Sir Malcolm Rifkind are also declared contenders for the leadership.