President of Argentina
Under the 1994 constitutional amendment, the President serves for four years, with a possibility of immediate reelection for one more term. However, unlike the President of the United States, in Argentina, a person may be reelected again after serving for two terms and staying out of office for the following term. So after serving for two consecutive periods, the president is not allowed to run for a third consecutive one, but may return for the two following elections and so on. There is no limit for a person to be a candidate if he or she does not win the elections.
List of presidents of the United States by age
Of the 44 persons who have served as president, 24 have become the oldest such individual of their time, with one, William Howard Taft, doing so twice. Herbert Hoover held this distinction for the longest period of any, from the death of Calvin Coolidge in January 1933 until his own death 31 years later. Lyndon B. Johnson held it for the shortest, from the death of Harry S. Truman in December 1972 until his own death only 27 days later. Theodore Roosevelt, at age 49, was the youngest individual to become the oldest living president; Jimmy Carter is the oldest to acquire this distinction, at the age of 94. Nine of these individuals have also had the distinction of being the oldest living vice president: John Adams, Martin Van Buren, Millard Fillmore, Andrew Johnson, Harry S. Truman, Lyndon B. Johnson, Richard Nixon, Gerald Ford, and George H. W. Bush.