N.C. Gen. Stat. § 163-209.1

During January of each year in which electors are elected, the Secretary of State shall notify each political party authorized to nominate electors of (i) the requirement under G.S. 163-1(c) to nominate first and second alternate electors, and (ii) the dual-office holding requirements of the North Carolina Constitution and the General Statutes, including specifically that if a person elected as elector holds another elective office at the time of taking the oath of office as elector, that other office is vacated upon taking the oath of office.