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Parliamentary Voting System and Constituencies Bill

I am grateful to the noble and learned Lord for giving way, albeit slightly after the point that he was making. He said, on behalf of himself and the noble Lord, Lord McNally, that no political modelling had been done on the implications of this reform. I would have been very surprised had he told us that the Civil Service had done an exercise on behalf of Ministers that had demonstrated what the political consequences of these changes would be. However, is he also giving us an assurance that such an exercise was not prepared either by a special adviser—a political adviser in the relevant government department—or by the political parties concerned?