Parliamentary Voting System and Constituencies Bill

I am grateful to my noble friend for giving way. As I understand his argument, he wants to have an initial decision on whether to change from first past the post. If there is a majority in favour of change, that becomes a trigger for a list of alternatives, which, according to the first decision, excludes the retention of first past the post. Would it not be possible to have, say, 45 per cent of the people voting for first past the post and then, when you come to the alternatives, to have any one of the alternatives securing less than 45 per cent of the support of the electorate? What would happen then?