Tex. Spec. Dist. Code § 1082.053
A person seeking to have the person's name printed on the ballot as a candidate for director must file with the board secretary a petition requesting that action. The petition must:
(1) be signed by at least 10 registered voters of the district, as determined by the most recent official list of registered voters, who:
Added by Acts 2009, 81st Leg., R.S., Ch. 1139 (H.B. 2619), Sec. 1.01, eff. April 1, 2011.