The Constitution authorizes the Senate to elect a president pro tempore (Latin for "president for a time") who presides over the chamber in the vice president's absence, and is, by custom, the senator of the majority party with the longest record of continuous service.[35] Like the vice president, the president pro tempore does not normally preside over the Senate, but typically delegates the responsibility of presiding to a majority-party senator who presides over the Senate, usually in blocks of one hour on a rotating basis. Frequently, freshmen senators (newly elected members) are asked to preside so that they may become accustomed to the rules and procedures of the body.