The Prime Minister has dismissed Nigel Farage's anti-politics image as "a normal bloke in the pub", describing the Ukip leader as "a consummate politician".
"We have seen that with his expenses and his wife on the payroll," David Cameron told BBC Radio 4's Today programme.
The premier ducked the question of what disciplinary action would be taken against Tory candidates who struck local arrangements with Ukip, saying only: "I don't see any prospect of this happening.
"From what I read in the Sunday newspapers, Nigel Farage wants to destroy the Conservative Party, not work in tandem with it."
Today EU leaders voted to back Jean-Claude Juncker as new president of the very powerful EU commission, which looks like business as usual.
In Essex the potential damage Ukip could do to Miliband's Downing Street elections is clear. He is there listening to voter's concerns.
The EU parliament is about to welcome the most Eurosceptic and right-wing intake in its history.