As has already been said, I think it would add obviously to the legitimacy, but I don't think it's required. I think what is required is more than one party.
I'd love to hear our Liberal colleagues comment on whether they agree that a measure brought in just by the governing Liberal Party alone would not be legitimate, but that what would be legitimate would be if a motion came in and had the support of a majority in the House of Commons that reflected the votes and the seats they got in the last general election. I think that's sufficient legitimacy—i.e., a straight majority vote in the House of Commons, with more than one party represented.