One can see why the idea of Iain Duncan Smith as Justice Secretary appeals to some in Tory high command, as the Daily Mail reveals this morning. The former leader is one of the few people who could square the party to a policy that treated rehabilitation as the main aim of the penal system. I expect, though, that IDS himself would not be keen on the move.
But this story does illustrate one of the biggest problems that Cameron will face with his reshuffle, how to make room at the top. Among Tory ministers, there promises to be very little movement in the higher echelons of government.
The Chancellor, the Foreign Secretary and the Home Secretary will all stay where they are. IDS and Michael Gove are both determined to stay and finish what they have started at welfare and education respectively.

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