Texas Election Code: Sec. 85.001. EARLY VOTING PERIOD.
General Election: During a General Election the period for early voting by personal appearance begins on the 17th day before Election Day and continues through the fourth day before Election Day, except as otherwise provided.
Runoff Election: The Early Voting Period for a special runoff election for the office of state senator or state representative or for a runoff primary election begins on the 10th day before election day.
If the date prescribed by Subsection (a) or (b) for beginning the period is a Saturday, Sunday, or legal state holiday, the early voting period begins on the next regular business day.