Businessman Ted Budd defeated a field of 16 other Republicans Tuesday night to become the likeliest new member of Congress from North Carolina.
Most of the candidates in the new 13th District were little known. But the Club for Growth PAC endorsed the firing range owner, airing two ads on his behalf.
Budd won with just 20 percent of the vote, with 91 percent of precincts reporting.
The state's General Assembly did away with its runoff provision when it approved a new congressional map earlier this year.
The new map shifted the 13th District, currently represented by GOP Rep. George Holding, across the state. Holding decided to run for the new 2nd District, and won Tuesday night.