It has been said that the US Senate, the greatest deliberative legislative body in the world, is the grooming ground for the Presidency and Vice Presidency.
So therefore, it is worth a look at the facts regarding this statement.
So which Presidents had served in the US Senate, in chronological order: (a total of 16 Presidents)
James Monroe
John Quincy Adams
Andrew Jackson
Martin Van Buren
William Henry Harrison
John Tyler
Franklin Pierce
James Buchanan
Andrew Johnson
Benjamin Harrison
Warren G. Harding
Harry Truman
John F. Kennedy
Lyndon B. Johnson
Richard Nixon
Barack Obama
However, and this is stunning, only THREE of these Presidents were directly elected from the US Senate to the White House—Harding, Kennedy, and Obama.
And four of these Presidents who served in the Senate were not originally elected, but succeeded a President who had died in office—Tyler, Andrew Johnson, Truman, and Lyndon Johnson.
And notice 10 of these 16 Presidents who had served in the US Senate did so in the 19th century, and
except for Harding in the early 1920s, while four others were President between 1945 and 1974, with Obama the 16th and most recent example, but really a fluke as only the third elected directly from the Senate.
When we examine which Senators became Vice President of the United States, we discover the following in chronological order: (a total of 22 Vice Presidents)
Aaron Burr
Martin Van Buren
Richard Mentor Johnson
John Tyler
George M. Dallas
William R. King
John C. Breckinridge
Hannibal Hamlin
Andrew Johnson
Henry Wilson
Thomas A. Hendricks
Charles W. Fairbanks
Charles Curtis
Harry Truman
Alben Barkley
Richard Nixon
Lyndon B. Johnson
Hubert H. Humphrey
Walter Mondale
Dan Quayle
Al Gore
Joe Biden
Of this list of 22 Vice Presidents who had served in the Senate, six became President–Van Buren, Tyler, Andrew Johnson, Truman, Lyndon B. Johnson, and Nixon.
So the Senate gave us about 40 percent of our Presidents, and about 50 percent of our Vice Presidents.