First off, she's not accomplished anything noteworthy in her first year. She's made some gaffes in making appointments, most notably replacing Darla Moore as a trustee for USC. Ms. Moore has been a MAJOR benefactor to USC over the years, so much so that USC named its highly regarded business school after her, but she hadn't contributed to the Haley campaign so Haley replaced her with someone who had. Plus the current controversy over favoring the Port of Savannah over that of Charleston isn't helping either. Haley also hasn't been as transparent about what she does as she promised she would be. Last bit not least, her role in forcing out the Department of Natural Resources director has prompted complaints from Sanford of all people.
http://www.thestate.com/2011/12/10/2074989/sanford-concerned-about-dnr-chiefs.htmlAll in all, its a lot of little things, but they've all managed to tarnish Nikki.
