I think the poll is accurate because it shows that75% of the South Carolina GOP doesn’t want Romney. The problem is that unless conservatives unite behind one alternative to Romney (e.g. Palin, Bachmann or Perry); Romney will win the nomination by simply racking up pluralities against a big field.
At this point, I wouldn’t be surprised if Slick Willard wouldn’t want both Palin and Perry to jump in and divide the conservative vote between themselves and Bachmann.
In 2008, Romney/Paul/McCain/Giuliani (non-conservatives) got 54% of the primary vote. Huckabee/Thompson/other (conservatives) got 46%. A moderate split would be helpful there for sure, as they have an advantage.