As I write this each of the major candidates has won one or more states in the Super Tuesday/Mardi Gras primaries. When the final results are in and delegates are counted I'm sure there will be winners and losers, but right now all five major candidates (McCain, Romney, Huckabee, Obama, and Clinton) have proved that in the right setting they are winners.
McCain is a genuine hero, who is often wrong about everything except national defense. Handsome, rich Romney is whatever you want him to be, depending on the constitutiency to which he has to appeal. Huckabee is probably the most talented natural campaigner, but he appeals to a narrow slice of the GOP. Obama has style and grace, and almost no record for us to hold against him. Clinton is one tough old bird, whom almost nobody actually likes. It isn't exactly a parade of dwarves, but close.