For students of American politics, following the way the Romney campaign played Newt Gingrich in Florida is a lesson to learn and to keep. Romney’s people must have realized that Newt does best when he is positive. His bold ideas, clear vision, revolutionary insights and extraordinary perspectives resonate with voters and win him millions of supporters. Romney, less compelling but more consistent, doesn’t need stellar debate performances or bold vision to win. The case for the former Massachusetts governor is more circumstantial: He can reach out to independents by virtue of his past apostasies on healthcare and abortion. He looks,...