That program shall be nondiscriminatory and shall comply with the provisions of the Voting Rights Act of 1965, as amended, and with the provisions of the National Voter Registration Act. The State Board of Elections, in addition to the methods set forth in this section, may use other methods toward the ends set forth in subdivisions (1) and (2) of this subsection, including address-updating services provided by the Postal Service, and entering into data sharing agreements with other states to cross-check information on voter registration and voting records. Any data sharing agreement shall require the other state or states to comply with G.S.163-82.10 and G.S.163-82.10B. Each county board of elections shall conduct systematic efforts to remove names from its list of registered voters in accordance with this section and with the program adopted by the State Board. The county boards of elections shall complete their list maintenance mailing program by April 15 of every odd-numbered year, unless the State Board of Elections approves a different date for the county.
A county board shall send a confirmation mailing in accordance with this subdivision to every registrant after every congressional election if the county board has not confirmed the registrant's address by another means.
N.C. Gen. Stat. § 163-82.14