Tex. Elec. Code § 173.010

During October preceding each primary election year, the secretary of state shall post on the secretary's website a current set of the rules and any available guidelines adopted under this subchapter. The secretary of state shall e-mail each state or county chair who has provided the secretary of state an e-mail address when the rules and guidelines have been posted. If a rule or amendment of a rule is adopted after the set is posted, the secretary shall update the posting with the new rule or amendment not later than the 10th day after the date of its adoption.