And they say all those Tea Party signs weren’t about racism: Forty-six percent of Mississippi Republicans support making interracial marriage illegal, and only 40 percent said it should be legal, according to a Public Policy Polling survey released Thursday. The poll also found that Haley Barbour, the former governor of Mississippi, was the favorite for the GOP nomination, winning 37 percent. Former Arkansas Gov. Mike Huckabee followed with 19 percent, and Sarah Palin and Newt Gingrich tied with 10 percent. Among the anti-interracial marriage voters, Barbour, Palin, and Huckabee came out on top. A February Gallup poll found Mississippi to be the most conservative state in the nation, with 50 percent of adults identifying themselves that way.