Mitt Romney - the old reliable - returned to form in South Carolina on Saturday, capturing just 27.8% of the Republican vote.  Or is Vapid Mitt the captive of the quarter to third of the GOP electorate that is oh-so comfortably moderate?  Good question, and Florida's GOP voters may end up giving us the answer. New Hampshire may just prove to be Romney's high water mark - New Hampshire, that is, backyard to Mitt's home state of Taxachusetts.  If Romney couldn't win in The Granite State, where can he win?               Here's the conventional wisdom on the upcoming Florida Republican primary, as expressed by the Washington Post's Dan Balz.  Balz writes: "Florida presents a major challenge [to GOP contenders Mitt Romney, Newt Gingrich, and Rick Santorum, principally], given its size and complexity." The Sunshine State may present challenges in terms of size and complexity in a general election fight,...(Read Full Post)