On 14 April, David Cameron tried to firm up the Tory vote for 5 May with a hardline speech on immigration and on welfare cuts.
The speech was made to an invited audience of Tory activists in a small town, but pushed to the press so that it would get front-page headlines. (Daily Mail: “PM savages Labour's open-door policy”).
Lib-Dem leader and deputy prime minister Nick Clegg said he saw the speech in advance and “noted rather than approved” it. Lib-Dem business minister Vince Cable, more irritably, told the BBC that the speech was “very unwise”.