N.C. Gen. Stat. § 163-84: Time for challenge other than on day of primary or election.

The registration records of each county shall be open to inspection by any registered voter of the State, including any chief judge or judge of elections, during the normal business hours of the county board of elections on the days when the board's office is open. At those times the right of any person to register, remain registered, or vote shall be subject to objection and challenge. (1901, c. 89, s. 19; Rev., s. 4339; C.S., s. 5972; 1929, c. 164, s. 36; 1953, c. 843; 1955, c. 800; c. 871, s. 7; 1959, c. 616, s. 2; 1963, c. 303, s. 1; 1967, c. 775, s. 1; 1973, c. 793, s. 33; 1993 (Reg. Sess., 1994), c. 762, s. 24; 2013-381, s. 20.1; 2017-6, s. 3; 2018-146, s. 3.1(a), (b).)