A special election will be held in the coming months, according to state law.
The three-judge panel agreed with the State Commission on Judicial Conduct in its action against Judge Natalia Cornelio.
State Representative Gina Hinojosa, the Democratic nominee for Texas governor, wants to give every Texas household $1,500.
The U.S. Supreme Court on Monday declined to block Texas from enforcing a state law requiring age verification for app downloads.
Huffines, a former Republican state senator, is seeking a full term as the state's top financial officer. He previously primaried Abbott from the right and was among the most conservative lawmakers in Austin.
Motions for required training after the disaster have failed.