A county may alter the structure of its board of commissioners by adopting one or any combination of the options prescribed by this section.
For options b, c, and d, the county shall be divided into electoral districts, and board members shall be apportioned to the districts so that the quotients obtained by dividing the population of each district by the number of commissioners apportioned to the district are as nearly equal as practicable.
If any of options b, c, or d is adopted, the board shall divide the county into the requisite number of electoral districts according to the apportionment plan adopted, and shall cause a delineation of the districts so laid out to be drawn up and filed as required by G.S. 153A-20. No more than half the board may be apportioned to the county at large.
N.C. Gen. Stat. § 153A-58
Union County, 2007 N.C. Sess. Laws 328, s. 1