A new poll shows that former Massachusetts Governor Mitt Romney now has a less than 50 percent favorability rating among Republican voters. Public Policy Polling has released its monthly 2012 survey, which finds that while 65 percent of Republicans have a favorable opinion of former Arkansas Governor Mike Huckabee and 75 percent have a favorable opinion of former GOP vice-presidential nominee Sarah Palin, only 48 percent view Mitt Romney favorably. Romney's popularity has fallen 19 points in the poll since May. Tom Jensen of Public Policy Polling says the healthcare plan that Romney passed in Massachusetts when he was governor...