How many US presidents have left their office prematurely?

1. William Henry Harrison 2. Zachory Taylor 3. Millard Fillmore 4. James A. Garfeild 5. Warren G. Harding 6. John F. Kennedy 7. Gerald Ford 8. Richard Nixon 9. Ronald Reagan 1. William Henry Harrison 2. Zachary Taylor 3. Millard Fillmore 4. James A. Garfield 5. Warren G. Harding 6. John F. Kennedy 7. Gerald Ford 8. Richard Nixon 9. Ronald Reagan