The terms of U.S. Presidents and Vice Presidents are four years long, beginning and ending on the 20th of January of every fourth year, including 1937, the year of the beginning of the first presidential/ vice-presidential term that started on 20 Jan.
Four years
Yes a former US President can run for office of Vice President of the United States. A former US President can run and be elected for any other type of office.
Executive office of the president
The first US president took office in 1789.
Gerald Ford was the US President who was never elected to office. He became President after Richard Nixon resigned.
The President of the United States holds the highest office in the US government
The US constitution limits a US president to serving two terms in office.
President.
The Vice President Will step In
Nobody. A president continues to serve in office when he is impeached. If he is convicted and removed from office, the vice-president becomes president, same as if the president were to die.
Richard M. Nixon, 37th US President, is the only President to resign from office.
Term of office is the length of time for which an official is elected to serve. For example, it is two years for a Representative to the House, six years for a US senator and 4 years for the President.