speaks at the
White House on November 5, 1948. Barkley
had been elected on a ticket alongside incumbent-president
Harry S. Truman horse-riding at the
LBJ ranch on November 4, 1964. Humphrey
had been elected on a ticket alongside incumbent-president
Lyndon B. Johnson In many, but not all, instances in which a new vice president has been elected, there is also a change of presidents, with a new president having been elected. This has not always been the case, however. There have been instances in which an incumbent president is reelected with a new vice president-elect as their
running mate. This has often been due to an incumbent vice president having not received renomination. The most recent time this happened was
in 1944, when
Harry S. Truman was elected to replace
Henry A. Wallace alongside the ailing three-term president
Franklin D. Roosevelt. However, in other instances, this has been due to the vice presidency having been vacant, as there was no way to fill a vice presidential vacancy mid-term until the ratification of the
Twenty-Fifth Amendment to the United States Constitution. The most recent time that a new vice president was elected alongside an incumbent president was
in 1964, when
Hubert Humphrey was elected alongside
Lyndon B. Johnson, with the vice presidency being vacant due to Johnson's ascension after the
assassination of President
John F. Kennedy. Ever since, all elections of new vice presidents have come alongside an election of a new president. On November 5, 2024, Donald J. Trump became the first president since Roosevelt to win re-election with a different vice president
JD Vance. It is possible for an incumbent vice president to win reelection as the running mate of a new president-elect, in which case there would be a
United States presidential transition with the election of a new president-elect, but there would be no vice president-elect. This first happened in
1808 when Vice President
George Clinton, who was originally elected with
Thomas Jefferson, was reelected as vice president with
James Madison becoming president-elect. This happened again in
1828, when Vice President
John C. Calhoun, who was elected vice president in
1824 with
John Quincy Adams, was re-elected as vice president with
Andrew Jackson becoming president-elect. ==Roles in presidential transitions==