Patrick Mercer has gone out in style. One Tory MP, hearing that the whips had tried to dissuade him from triggering a by-election fight with Ukip at an extremely inconvenient time for David Cameron, told me:
‘It’s a waste of time. He’s determined to damage Dave. He’s Colonel Nicholson in Bridge on the River Kwai!’
Mercer has left Cameron a little present in the form of this by-election. Even if Nigel Farage announces today that he won’t stand in the contest (and James’s post from last night on the Ukip leader’s thinking is a must-read), Ukip can still repeat its success in Eastleigh by fielding an impressive formerly unknown candidate. In Eastleigh, Diane James was easily the most polished and impressive out of all those standing – and her candidacy helped Ukip give the impression it was more than a one-man band.

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