South Carolina's only current Democratic statewide office holder, State Superintendent of Education Jim Rex, filed the paperwork today with the State Election Commission for an official exploratory committee. He has stated that he may run for governor, for reelection, or not at all, but expects to decide by early September.
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He has the best statewide name recognition among the Dems, but it's a crowded field already. Unless he can convince the other major contenders to withdraw, possibly for attempts at other offices, I don't think his name recognition advantage will help him win in November, and the Democrats desperately need to avoid having a Gubernatorial runoff if they are gong to have the resources to win in November.