If a runoff candidate withdraws, the remaining candidate is considered to be elected and the runoff election for that office is not held.
Official text of the Texas Election Code as published by the Texas Legislative Council.
Election Code › Title 9 › Chapter 145 › Subchapter D
Texas Election Code § 145.095
Effect of Withdrawal from Runoff
Withdrawal, Death and Ineligibility of Candidate · Candidate in Election Other Than General Election for State and County Officers
Legislative history
Acts 1985, 69th Leg., ch. 211, Sec. 1, eff. Jan. 1, 1986.