majority party member
The vice president. When the office of vice president is vacant it is the president pro tempore.
The President Pro Tempori (I think that is the correct spelling -- it is usually just called the President Pro Tem) who is elected by the Senate
The president pro tempore is elected by the Senate and is customarily the longest serving senator in the majority party.Originally, the president pro tempore was appointed on an intermittent basis when the vice president was not present to preside over the Senate.
The President pro tempore of the Senate (the Senator elected as a leader by the other Senators).
No, by tradition, the President Pro Tempore of the Senate is the most senior Senator, which means the person who has been a Senator the longest.
The office is Senate pro tempore. He is elected by the Senate. The current custom is to elect the majority party member with the greatest seniority in the Senate.
The vice president. When the vice president is unable to for some reason, a President Pro Tempore is elected to do so.
president pro tempore
The vice-president of the United States serves as the president of the Senate. He is elected by the electoral college that elects the President of the US. He is not a senator and can only vote in the case of a tie. The president pro-tempore is elected by the Senate from among its members. By tradition they elect the majority party member with the longest seniority in the Senate.
The Vice-President is the President of the Senate.The President pro tempore (President pro tem), who chairs the Senate during the absence of the Vice President, is an elected position within the Senate, and is normally the US senator with the most seniority within the majority party.
The Secretary of Defense (as long as they would be eligible to be elected President).