She was leading by a larger margin at this point in 2010. Haley is in deep sh*t.
Uhh... no.
Indeed, hell no. The Winthrop Poll taken at this same point in 2010 had Haley leading by only +9. Possibly you might be thinking of a slew of Rasmussen polls during the summer of 2010 that had Haley with a larger lead, but those were Rasmussen polls after all.
So Haley +9 in 2010 to +10 now...she's a formidable incumbent...
She doesn't have to be formidable, she merely has to win, and she will. As I pointed out in the thread on the other poll, South Carolina politics is quite inelastic. It would have taken either a major failure or a major scandal to dethrone Queen Haley and install King Vincent in her place and neither has happened.