If an incumbent county or precinct officer is not renominated or is not reelected to the county or precinct office of a county, during the time following the date the results of the official canvass of the primary or election returns are announced, the commissioners court must approve any expenditure by the incumbent county or precinct officer who was not renominated or reelected that is over an amount set by the commissioners court.
Tex. Loc. Gov't. Code § 130.908