When a battle-weary David Davis got off the train home on Friday night, the condemnation of his colleagues ringing in his ears, he headed to his local pub for solace. His aides were waiting, with a sheaf of emails they stuffed straight into his hands.

They came from excited Tory activists, life-long Labour voters, ordinary people who had never written to politicians before: there was an offer of help from a Lib Dem constituency chairman and pledges of cash from pensioners. But one, he admits, gave him a lump in the throat : it was from a woman who worked on a local government project to encourage the alienated and unfranchised to vote. What he had done, she wrote, would make my job so much easier .