TP,
If incorporated as a nonprofits (most associations are but check to be sure), Corporate statutes would apply.
Per
Sec. 22.160. Sec. 22.160. VOTING OF MEMBERS. (a) Each member of a corporation, regardless of class, is entitled to one vote on each matter submitted to a vote of the corporation's members, except to the extent that the voting rights of members of a class are limited, enlarged, or denied by the certificate of formation or bylaws of the corporation.
(b) A member may vote in person or, unless otherwise provided by the certificate of formation or bylaws, by proxy executed in writing by the member or the member's attorney-in-fact.
(c) Unless otherwise provided by the proxy, a proxy is revocable and expires 11 months after the date of its execution. A proxy may not be irrevocable for longer than 11 months.
(d) If authorized by the certificate of formation or bylaws of the corporation, a member vote on any matter may be conducted by mail, by facsimile transmission, by electronic message, or by any combination of those methods.