Mississippi, more than Alabama, is an example of the organizational debate brewing within the GOP. Romney has the backing of prominent Republican officials there, from the governor to Henry Barbour, a top-ranked party official and confidant of the influential former governor Haley Barbour.
But Santorum has the support of numerous church and community leaders, and Gingrich has tea-party activists working with his team. Once the dust settles in the Magnolia State, Romney and his allies will get a sense, for better or worse, whether the support of GOP grandees matters down south.
National Review Online