Could his support for the war alienate centre-ground voters?
One of the big polling trends of the summer has been the growing concern about Britain’s continuing role in Afghanistan.
The view that we should not be there at all is becoming increasingly popular and the question arises over whether Cameron is right to go on supporting the UK’s involvement.
So far he has been totally in favour – the main dividing line has been over issues like whether the country’s troops are properly equipped.
But given the changing mood amongst voters should Cameron also be questioning the core approach? For the electoral segments who are least supportive are those centre ground voters who have come on board the Dave-led Tories.