US News & World Report's Washington Whispers column carries more speculation about an independent presidential run by John McCain:
Sen. John McCain' s white-hot public approval ratings--59 percent in the new Diageo/Hotline poll--are fast giving rise to a new 2008 presidential primary scenario among Washington's political brain trust. If, as conservatives believe, McCain's liberal stands on gays and abortion kill his GOP primary chances, he may ride into the election as an independent.
But as I've explained, such a run is implausible. It's nearly impossible for third party candidates to win, and the likely effect of McCain entering the race would be to throw the race to the Democrat. How likely is that?