Hannibal Hamlin.
He would have been President had he been retained by Abraham Lincoln in 1864.

Lloyd Bentsen
He defeated the first George Bush in 1970 for a Texas Senate Seat, then lost to that same George Bush and his partner Dan Quayle in 1988.

John Tyler
The first VP to assume the Presidency in 1840.

John Nance Garner
Served the first two terms with FDR during the Great Depression.

25th Amendment
Until the 25th Amendment, the VP was never replaced if the office was vacant.

Naval Observatory
The Vice President originally lived in private housing. In 1977, Vice President Walter Mondale and family were the first family to move into the renovated Naval Observatory.

Richard Nixon
Had served merely 6 years in Congress when selected by Dwight Eisenhower.

Serving Complete Terms
Only 27 Vice Presidents served complete terms for which they were elected. Of the 45 elected Vice Presidents, 27 completed their terms. 18 failed to serve complete terms.

Sarah Palin
Just the 2nd woman nominated as VP to a major party ticket.