Robinson, who's run for Congress in the Tar Heel state twice before, is known for his shocking ads, including a one from his 2006 campaign against Democratic Rep. Brad Miller in the 13th District. Robinson boasts that he's the "black Jesse Helms" and touts the endorsement of the late conservative North Carolina senator's son as well as Michael Reagan. He ends the ad with this kicker: "I approve this message, because the only thing I have in common with Barack Obama is a good tan." Robinson campaign manager Steve Arnold said the campaign has purchased airtime to run the ad in several media markets in the district during tonight's debate on Fox, including Charlotte and Greensboro, but wouldn't disclose the the amount of the ad buy. He said Robinson wouldn't endorse in the GOP presidential primary, though. Robinson is locked in a very competitive -- and growing -- Republican primary for the right to face Democratic Rep. Larry Kissell in a GOP-leaning district that became even more Republican in redistricting. Former Congressional Chief of Staff Richard Hudson, Weddington Town Councilman Dan Barry, dentist Scott Keadle, state Rep. Fred Steen and surgeon John Whitley are all seeking the nomination.