SC-02: What’s the Outlook?

In a state without much in the way of competitive seats, SC-02 appears to be the most competitive, with a PVI of R+9 or so.  And it doesn’t look like Joe Wilson has had serious competition since forever.

Anyway, what with the outpouring of Dem voters relative to GOP voters in the recent presidential primaries, I’m wondering if this might be an outside takeaway opportunity.  Any idea, SSP junkies?  

What’s the story with SC-02 and Joe Wilson? Any challengers on the horizon?  How strong is Wilson, anyway?  Or is this one just a lost cause?