Texas Election Code - ELEC § 171.071. Precinct Executive Committee Established

(a) For each commissioners precinct and for each justice precinct, a precinct executive committee is established as provided by this subchapter for each political party holding a primary election.

(b) The state executive committee may by rule require a specific deadline for filling vacancies on a precinct executive committee before that committee fills a vacancy in nomination for public office, but may not set the deadline for a date later than the date that the vacancy in nomination for public office occurred.  The deadline does not apply to the filling of a vacancy if the executive committee contains no members.