The Oklahoma Senate is the upper house of the two houses of the Legislature of Oklahoma, the other being the Oklahoma House of Representatives. The total number of senators is set at 48 by the Oklahoma Constitution.[1] Senators approve or reject gubernatorial appointments, and contribute to the creation of both state law and an annual state budget. Every ten years, they aid in drawing new boundaries for the electoral districts of the Oklahoma. The Oklahoma Senate also serves as a court of impeachment. The presiding officer of the Senate is the Lieutenant Governor of Oklahoma, who is the President of the Senate. Since the 1960s, the President Pro Tempore of the Senate has presided over daily work. Prior to that time, the President of the Senate took a leading role in the Senate, including appointing committees and members to those committees. The President of the Senate may cast a vote only in the instance of a tie vote and may not vote to create a tie.