By Tim Montgomerie
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Remember how Blair and Brown ducked going to tricky by-elections? David Cameron was in Corby today to support the campaign of our candidate Chris Emmett. The party insists it is fighting the seat hard and next week a string of MPs will be helping with the effort. They include Nick de Bois, Angie Bray, Maria Miller, Nicky Morgan, Margot James, Andrea Leadsom, Karen Bradley and Jackie Doyle-Price.
The whole constituency has been covered twice with a newspaper and survey and there's much more literature to come. Newspapers are tailored to different parts of the seat and here's a PDF of one of them.
The newspapers give a good indication of the kind of message that Con HQ is experimenting with. Crime and welfare feature prominently as issues.
Click here if you can help make calls for Chris Emmett.