THE TEXAS CONSTITUTION
ARTICLE 3. LEGISLATIVE DEPARTMENT
Sec. 23. VACANCY FOLLOWING REMOVAL FROM DISTRICT OR COUNTY FROM WHICH ELECTED. If any Senator or Representative remove his residence from the district or county for which he was elected, his office shall thereby become vacant, and the vacancy shall be filled as provided in section 13 of this article.
They have removed themselves so their seats are vacant. So long as they are vacant they do not count towards a quorum. Republicans now have a super-majority and can cram a lot more down than just voting rules. Let’s think big. Redistricting? Concealed carry?