Texas Agriculture Code - AGRIC § 43.003. Petition and Election Order

(a) If a number of qualified voters equal to 10 percent or more of the voters of the county who voted for governor in the last preceding gubernatorial election sign and present to the commissioners court a petition calling for establishment of a county experiment station under this subchapter, the commissioners court shall order an election on the proposition to be held on the next uniform election date that is at least 30 days after the date of the order.

(b) The order must be signed by the county judge.  Copies of the order shall be posted at the door of the county courthouse and at all post offices in the county.