How will Trump be regarded in historical rankings of Presidents?

[Fmr. Gov. NickG]

For the next few decades, Trump will be ranked as the worst of all time.
A hundred years from now, he’ll be ranked somewhere between Pres. Don Jr. and Pres. X Æ A-12.

[Catalyst138]

Whether his presidency was the worst in terms of impact is debatable. But he is easily the worst person to ever become President.

[cg41386]

Pretty much a coin flip between bottom tier and absolute worst.

[LabourJersey]

Whether his presidency was the worst in terms of impact is debatable. But he is easily the worst person to ever become President.

[Sir Mohamed]

Rock bottom. Same tier as Buchanan and the first Johnson, but probably the worst ever. He will be remembered as destructive and completely incompetent demagogue who was greatly harmed democracy and America's standing in the world. He will further be remembered a horrible person who spread conspiracies and lies and was missguided on many levels. And his GOP enablers will be remembered as moral cowards who let the destruction of the republic happen for short term political gains.

[Thank you for being a friend...]

Out of the men that have been President, he is the VERY LAST one I'd want to have a "beer" with at a local bar in my old hometown in PA.  UNLIKABLE SMUG ELITIST JERK.

[Fmr. Gov. NickG]

It’s worth noting that the American Political Science Associtation did a survery of presidential scholars in early 2018, and Donald Trump already ranked dead last only a year into his term.  It’s hard to imagine his reputation has improved in the meantime.

https://www.nytimes.com/interactive/2018/02/19/opinion/how-does-trump-stack-up-against-the-best-and-worst-presidents.html