(a) A candidate for nomination may not withdraw from the runoff primary election after 5 p.m. of the 3rd day after the state canvass under Section 172.120.
(b) A withdrawal request for the runoff primary must be filed with the state chair, for a statewide or district office, or with the county chair, for a county or precinct office.
(c) If a runoff candidate withdraws, the remaining candidate is the nominee and the runoff election for that office is not held.
Official text of the Texas Election Code as published by the Texas Legislative Council.