MMCs typically have 5 members and are therefore 5 times bigger (size of total electorate, but also geographically) than single member constituencies (dprvoting.org)
Ben Page of Mori said today that two - thirds of LibDem voters (24 %) prefer a LD - Labour to an LD - Tory deal, so that (amounts to roughly 16 % v 8 % of total electorate) gets you close to 45 % who strongly prefer a left coalition. (nextleft.org)
She would spuriously use a win to claim that the 37 % of votes that might be cast for Tories (even smaller than the 37 % of the total electorate that she claims as a «mandate» for Brexit) gives her a «further mandate» for this act of folly. (politics.co.uk)