Former reality-TV star and singer Clay Aiken is in a nail-biter: The results from his Democratic primary bid for a North Carolina congressional seat are too close to call. With all precincts reporting early Wednesday, Aiken leads textile entrepreneur Keith Crisco by 369 votes. Aiken got 40.8 percent of the vote to Crisco’s 39.5 percent. The winner will take on incumbent Republican Renee Elmers come November.