Tex. Election Code Section 201.021
Time Vacancy Occurs Generally

201.001
Resigning or Declining Office 201.002
Authority to Act on Resignation or Declination 201.021
Time Vacancy Occurs Generally 201.022
Death 201.023
Resignation 201.024
Removal 201.025
Acceptance of Another Office 201.026
Declaration of Ineligibility 201.027
New Office 201.028
Deceased or Ineligible Candidate Receiving Vote Required for Election 201.029
Declination of Officer-elect 201.030
Vacancy Resulting from Recall Election 201.051
Time for Ordering Election 201.052
Date of Election 201.053
Unexpired Term and Full Term Filled Simultaneously 201.054
Filing Period for Application for Place on Ballot