What’s the score with ‘revolving ministers’?

One question I have is around the issue of rolling ministers: i.e. members of the same party who are to take a single portfolio by turns. Normal department rules usually instruct senior civil servants not to give new ministers access to key information that had been privy to the previous incumbent. The implication is that each new minister begins his or her own new regime. Does anyone know whether specific protocols have been introduced to ensure smooth transition from one party colleague to the other? If not, is it not likely that this may prove a long term disincentive for such an arrangement?

Mick is founding editor of Slugger. He has written papers on the impacts of the Internet on politics and the wider media and is a regular guest and speaking events across Ireland, the UK and Europe. Twitter: @MickFealty