Vice President of the United States

The vice president's only explicit constitutional duties are to preside over the Senate and to cast a tie-breaking vote there, as specified in Article I, Section 3. In practice, the vice president rarely presides except for ceremonial occasions or when a tie is expected. The office also holds a unique position in the presidential line of succession, being first in line under the Presidential Succession Act of 1947.¹

The 12th Amendment (1804) refined the electoral process, requiring separate ballots for president and vice president, and the 25th Amendment (1967) clarified succession and established a procedure for filling a vice presidential vacancy. The vice president is also a member of the National Security Council and, by statute, a member of the Board of Regents of the Smithsonian Institution.²

For most of the 19th century, the vice presidency was a largely powerless post, often described as a "bucket of warm spit" (attributed to John Nance Garner). Vice presidents were often chosen for political balance rather than executive capability, and several were marginalized by presidents. The modern vice presidency began to take shape in the mid-20th century, with Richard Nixon and Walter Mondale expanding the role into a key advisor and policy advocate.

Since the 1970s, vice presidents have typically held significant portfolios, such as Al Gore's environmental initiatives or Dick Cheney's national security role. The office has also become a stepping stone to the presidency: 15 vice presidents have later become president, either by succession or election.³

The 25th Amendment, ratified in 1967, provides the mechanism for filling a vice presidential vacancy: the president nominates a successor, who must be confirmed by a majority vote in both houses of Congress. This has occurred twice: Gerald Ford (1973) and Nelson Rockefeller (1974). The amendment also allows the vice president to serve as acting president if the president is temporarily incapacitated, a provision invoked temporarily by Vice Presidents George H. W. Bush and Dick Cheney during presidential medical procedures.⁴

Historically, nine vice presidents have ascended to the presidency upon the death or resignation of the president, the most recent being Lyndon B. Johnson in 1963. The vice president also plays a role in the 25th Amendment's Section 4, which allows the vice president and cabinet to declare the president unable to discharge duties, though this has never been invoked.⁵

Several vice presidents have had unusual distinctions. John Tyler was the first to assume the presidency upon a president's death (1841), setting the precedent that the vice president becomes president, not merely acting president. Charles Curtis, who served under Herbert Hoover, was the first person of Native American heritage (Kaw Nation) to hold the office. The vice president's official residence, Number One Observatory Circle, was established in 1974; previously, vice presidents lived in their own homes.

The vice president also serves as the president of the Senate, but only casts a tie-breaking vote; as of 2025, vice presidents have cast 301 tie-breaking votes, with John C. Calhoun holding the record at 31. The office has also been vacant for a total of 37 years, most recently from 1974 to 1974 (briefly) and from 1974 to 1974 (actually, the longest vacancy was 1963–1965, after Kennedy's assassination).⁶

Tie-breaking vote

A vote cast by the vice president in the Senate to break a 50-50 deadlock.

25th Amendment

Constitutional amendment addressing presidential succession and vice presidential vacancy.

Number One Observatory Circle

Official residence of the vice president, located in Washington, D.C.