Terms Used In Texas Constitution Art. 4 sec. 18
- President pro tempore: A constitutionally recognized officer of the Senate who presides over the chamber in the absence of the Vice President. The President Pro Tempore (or, "president for a time") is elected by the Senate and is, by custom, the Senator of the majority party with the longest record of continuous service.
The Lieutenant Governor or President pro tempore of the Senate shall, during the time the Lieutenant Governor or President pro tempore exercises the powers and authority appertaining to the office of Governor, be under all the restrictions and inhibitions imposed in this Constitution on the Governor.