A new Pew Research poll looks at the favorability ratings of leading Republicans and notes Mitt Romney (R) has seen his ratings improve the most "and now enjoys a positive balance of opinion among the general public: 40% rate him favorably, 28% unfavorably." Alaska Gov. Sarah Palin (R) "continues to be divisive figure among the general public, with about as many saying they have an unfavorable impression (44%) as a favorable view (45%) of the Alaska governor...