This probably wont' help Mr. Brown's poll standing:
'The Prime Minister was heard describing an exchange he had with a female voter on the campaign trail today as a "disaster", calling her a "bigoted woman".The comments were made as he got into his car after speaking to the woman in Rochdale, not realising that he had a Sky News microphone pinned to his shirt.
He told an aide: "That was a disaster - they should never have put me with that woman. Whose idea was that? It's just ridiculous..."
Asked what she had said, he replied: "Everything, she was just a bigoted woman."
'
The voter, 65 year old Gillian Duffy, had pressed the prime minister on immigration and other matters.
UPDATE: Audio here.