Texas constitution
Article 17: mode of amending the constitution of this state
Section 1

(c) The election shall be held in accordance with procedures prescribed by the Legislature, and the returning officer in each county shall make returns to the Secretary of State of the number of legal votes cast at the election for and against each amendment. If it appears from the returns that a majority of the votes cast have been cast in favor of an amendment, it shall become a part of this Constitution, and proclamation thereof shall be made by the Governor.