N.C. Gen. Stat. § 106-568.30
In the event any referendum, held at any time under the provisions of this Article, is carried by the vote of two-thirds or more of the eligible farmers participating therein and assessments in pursuance thereof are being levied annually, then the board of directors of Tobacco Associates, Incorporated shall, in its discretion, have full power and authority to call and conduct another referendum in which the farmers and producers of flue-cured tobacco shall vote upon the question of whether or not assessments under this Article shall be continued for the next three tobacco marketing years. If the referendum is carried as provided in this Article, then assessments may be levied and collected as provided in this Article.
N.C. Gen. Stat. § 106-568.30