A guardian, executor, administrator, or trustee shall present to and file with the clerk of the irrigation district election board a certified copy of the person's or corporation's letters of guardianship, letters testamentary, or letters of administration, or of the instrument creating the trust, as the case may be. Any such guardian, executor, administrator, or trustee, whether an individual or a corporation, by an instrument in writing, duly acknowledged, may designate an agent to vote in the person's or corporation's behalf. Such instrument appointing such agent shall be presented to and filed with the clerk of the district election board by such agent.
N.D.C.C. § 61-05-04