In all of American history, there have only been three times that a President could preside over the success of his chosen successor of his own party being inaugurated as the next President of the United States.
The first time was 1837, when Vice President Martin Van Buren was inaugurated as the 8th President, succeeding Andrew Jackson.
The second time was 72 years later in 1909, when Secretary of War William Howard Taft was inaugurated as the 27th President, succeeding Theodore Roosevelt.
The third time was 80 years later in 1989, when Vice President George H. W. Bush was inaugurated as the 41st President, succeeding Ronald Reagan.
Now, next year, 2017, it seems very likely, although not guaranteed at this point, that former Secretary of State Hillary Clinton will be inaugurated as the 45th President, 28 years later after Bush, succeeding Barack Obama.
However, history was not kind on the successors to Jackson, TR, and Reagan, as all three–Van Buren, Taft, and the first Bush—failed to win reelection, and are all ranked lower in the estimate of historians than their predecessors.
So one has to wonder about the future fortunes of Hillary Clinton. However, on this July 4 week, President Obama and Vice President Joe Biden are joining Clinton in North Carolina and Pennsylvania to begin the full scale campaign for the Presidency against Donald Trump!