I can answer how Romney is a Liberal, since I live in Massachusetts. First, Romney invented ObamneyCare - socialized medicine for the masses. Secondly, Mittens signed into law a permanent assault weapons ban in Massachusetts. Our firearms laws in Mass are only second to New York in terms of being arbitrarily limiting.
Other than making us second to last in job growth during his brief tenure, that is what made Mittens a terrible Libral candidate.