The 2018 Presidents and Executive Politics Presidential Greatness Survey asks respondents, each of them current and recent members of the Presidents and Executive Politics Section of the American Political Science Association, to rate each president on a scale of 0-100 for overall greatness.
The survey was conducted by Brandon Rottinghaus, a professor of political science at the University of Houston, and Justin S. Vaughn, an associate professor of political science and director of the Center for Idaho History and Politics at Boise State University.
Buchanan was dislodged from his position as our nation's worst president by Trump.
The top of the list remains fairly steady from 2014, with Abraham Lincoln, George Washington, Franklin Delano Roosevelt, Teddy Roosevelt, and Thomas Jefferson rounding out the top five. The poll ranks "presidential greatness", since the first POTUS. Trump came in dead last with a score of... 12.
The pair managed to stay in the top 15, however, with Clinton at 13th greatest and Jackson at 15th.
"Donald J. Trump makes his ranking debut at the bottom of the list", the survey states. Since that time, Reagan improved 2 spots, Obama rose 10 spots, and Bush rose 5.
"Under the previous rating, trump is located in the most categories, however, dozens of presidents early in their terms have been weak and later corrected its course, receiving public recognition", the researchers said.
That's lower than James Buchanan, who was in power in the 1860s when the country descended into civil war, and William Henry Harrison, who was in office for only a month because he died of a cold he caught after he refused to wear an overcoat at his inauguration during the freezing Washington Winter.