Minn. Stat. § 308A.631
Subd. 1. Quorum.
(a) Except as provided in paragraph (b), the quorum for a members' meeting to transact business is:
(b) The quorum provisions of paragraph (a) apply notwithstanding quorum requirements of the articles or the bylaws, except for:
Subd. 2. Quorum for voting by mail.
In determining a quorum at a meeting, on a question submitted to a vote by mail, members present in person or represented by mail vote shall be counted. The attendance of a sufficient number of members to constitute a quorum shall be established by a registration of the members of the cooperative present at the meeting. The registration shall be verified by the president and secretary of the cooperative and shall be reported in the minutes of the meeting.
Subd. 3. Meeting action invalid without quorum.
An action by a cooperative is not valid or legal in the absence of a quorum at the meeting at which the action was taken.