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Beyond this important role, the only duty required by the U.S. Constitution is that the Vice President serve as the President of the Senate. Since 1974, the official residence of the Vice President and his family has been Number One Observatory Circle, on the grounds of the United States Naval Observatory in Washington, DC.
All dates unaccounted for represent periods of time during which there was no Vice President. Prior to ratification of the 25th Amendment in 1967, no provision existed for filling a vacancy in the office of Vice President; as a result, the position was left vacant until the next ensuing election and inauguration. Since the adoption of the 25th Amendment, the office has been vacant twice while awaiting confirmation of the new Vice President by both houses of Congress.
Notes:
1 Arriving in New York City before President-elect George Washington, Adams was sworn as Vice President nine days before the President.
2 Died in office
3 Resigned from office
4 Succeeded to Presidency upon death or resignation of President
5 On his deathbed when scheduled to be sworn in, King received special dispensation from Congress to be sworn in twenty days later, while attempting to recover in Havana, Cuba.
6 Became Vice President under provisions of 25th Amendment
7 Acted as President under provisions of 25th Amendment