America has had 47 Vice Presidents, but only nine have had two terms of office, including the last three, once Joe Biden completes his term in January 2017!
In fact, NEVER have three Vice Presidents in a row had two terms of office until Al Gore, Dick Cheney, and now Joe Biden, assuming he completes his second term.
Before these three, the only Vice Presidents to have two complete terms were John Adams under George Washington; Daniel Tompkins under James Monroe; Thomas Marshall under Woodrow Wilson; John Nance Garner under Franklin D. Roosevelt; Richard Nixon under Dwight D. Eisenhower; and George H. W. Bush under Ronald Reagan.
Two others–George Clinton under Thomas Jefferson and James Madison (dying in the last year of the second term), and John C. Calhoun under John Quincy Adams and Andrew Jackson (resigning with three months left in the Jackson term), nearly finished eight years.