Texas Property Code - PROP § 82.110. Voting and Proxies

(a) If only one of the multiple owners of a unit is present at a meeting of the association, that person may cast the vote or votes allocated to that unit. If more than one of the multiple owners is present, the vote or votes allocated to that unit may be cast only in accordance with the owners' unanimous agreement unless the declaration provides otherwise. Multiple owners are in unanimous agreement if one of the multiple owners casts the votes allocated to a unit and none of the other owners makes prompt protest to the person presiding over the meeting.

(b) Votes allocated to a unit may be cast under a written proxy duly executed by a unit owner. If a unit is owned by more than one person, each owner of the unit may vote or register protest to the casting of votes by the other owners of the unit through a proxy duly executed by the unit owner. A unit owner may not revoke a proxy given under this section except by giving actual notice of revocation to the person presiding over a meeting of the association. A proxy is void if it is not dated or if it purports to be revocable without notice. A proxy terminates one year after its date unless it specifies a shorter or longer time.

(c) Cumulative voting is not allowed.