Texas Election Code - ELEC § 243.008. Discovery and Depositions

(a) Any party to a contest may conduct discovery and take depositions under the procedures applicable to a civil suit in the district court, subject to changes in those procedures or limitations imposed by the governor or the master of discovery.

(b) Each party is responsible for the initial payment of the party's costs of discovery and taking depositions, but the costs may be assessed as provided by Section 243.013.