The bylaws may provide for the division of the territory served or to be served by a cooperative into two or more districts for any purpose, including, without limitation, the nomination and election of directors and the election and functioning of district delegates. These delegates, who shall be members, may nominate and elect directors. The bylaws shall prescribe the boundaries of the districts, or the manner of establishing the boundaries, and the manner of changing the boundaries, and the manner in which the districts function. A member at any district meeting and a district delegate at any meeting may not vote by proxy, by mail, or by electronic transmission. However, the election of directors shall be by mail or, if the bylaws so provide, by electronic transmission, as specified by the cooperative, except that electronic transmission may not be the only allowed option for voting.