In Pictures: The 15 Worst Presidents in U.S. History

Each U.S. president was ranked out of 100 as part of a survey by the American Political Science Association. Here are the 15 lowest scores. George W. Bush, 2001-2009, scored 40.42.Chip Somodevilla, Getty images
Chester A. Arthur, 1881-1885, scored 39.9.Public Domain

From George Washington to Donald Trump, who are the worst U.S. presidents in history? 

The 2018 Presidents and Executive Politics Presidential Greatness Survey, which ranks presidents from best to worst, was based on responses from 170 current and recent members of a section of the American Political Science Association, an organization of social science experts. Each U.S. president was ranked out of 100 as part of this survey.

George W. Bush, 2001-2009, scored 40.42 and is ranked at 15th. But one president scored just over 12 points, coming in dead last among U.S. commanders-in-chief in an expert rankings survey released on President's Day.

Check the complete slideshow to see who's at the bottom of the ranking.

Benjamin Harrison, 1889-1893, scored 37.63. Hiton Archive, Getty Images
Richard Nixon, 1969-1974, scored 37.18. Keystone, Getty Images
James A. Garfield, March-September 1881, scored 36.64. Public Domain
Zachary Taylor, 1849-1859, scored 33.34.Hulton Archive, Getty Images
Herbert Hoover, 1929-1933, scored 33.27.Edward Gooch, Hulton Archive, Getty Images
John Tyler, 1841-1845, scored 31.46. Public Domain
Millard Fillmore, 1850-1853, scored 27.71. Public Domain
Warren G. Harding, 1921-1923 scored 25.26.Public Domain
Andrew Johnson, 1865-1869, scored 24.91.Public Domain
Franklin Pierce, 1853-1857, scored 23.25. Public Domain
William Henry Harrison, March-April 1841, scored 19.02.Public Domain
James Buchanan, 1857-1861, scored 15.09.Public Domain

From George Washington to Donald Trump, who are the worst U.S. presidents in history? 

The 2018 Presidents and Executive Politics Presidential Greatness Survey, which ranks presidents from best to worst, was based on responses from 170 current and recent members of a section of the American Political Science Association, an organization of social science experts. Each U.S. president was ranked out of 100 as part of this survey.

George W. Bush, 2001-2009, scored 40.42 and is ranked at 15th. But one president scored just over 12 points, coming in dead last among U.S. commanders-in-chief in an expert rankings survey released on President's Day.

Check the complete slideshow to see who's at the bottom of the ranking.