Texas Election Code - ELEC § 243.011. Attendance of Witnesses

(a) The governor has the same authority as a district court in an election contest to require the attendance of witnesses and the production of evidence.  The secretary of state shall issue in the name of the governor subpoenas or other process as directed by the governor.

(b) Any sheriff or constable of the state or a person appointed by the governor may serve the process issued by the secretary of state.

(c) Compliance with process issued under this chapter may be enforced in the manner provided for enforcement of process issued under Chapter 2001, Government Code.

(d) The summoned witnesses and the officers serving the process are entitled to mileage and fees as prescribed by law in a civil suit in the district court.

(e) Each party is responsible for the initial payment of the costs for service of process and attendance of witnesses at the party's request, but the costs may be assessed as provided by Section 243.013.