As celebrity glamour shots go, Sarah Palin’s cover photo on this week’s Newsweek is danged good! The best-selling author and reality-TV star looks young and vibrant. Her devil-may-care countenance aided and abetted by the wind conspicuously blowing hair back. And while her outfit might be laid back, there’s no doubt she’s in total control. But when Palin’s cover shot is viewed through the prism of presidential politics, it’s a dud. Folks want to be able to envision someone sitting in the Oval Office. They don’t necessarily want to envision them in the pages of Esquire magazine’s “Sexiest Woman Alive 2011”...