President of the Senate U.S. federal government was established in 1789. The vice president with the most tie breaking votes is John Adams (served 1789–1797) with 29. The current Vice President Mike Pence, in office since January 2017, has cast seven tie-breaking votes. In state governments of the United States, the presiding officer of the state senate (the upper house) is a matter decided by the state's constitution. Some states designate the lieutenant governor as president of the senate, while in other states, the Senate elects its own president. The Tennessee Senate elects a senator Speaker of the Senate, who is given the title
President pro tempore of the Oklahoma Senate special session by a written call signed by two-thirds of the members of the Oklahoma Senate and two-thirds of the members of the Oklahoma House of Representatives. Once conditions are met, the call is filed with the president pro tempore and the speaker who must issue a join order for the convening of the special session. According to Section 16 of Article Six of the Oklahoma Constitution, the president pro tempore is second in the gubernatorial line of succession behind the lieutenant governor. Henry S. Johnston, of Perry, was sworn into office as the first president pro tempore on November