Very unlikely, but then I never thought it would have happened the first time.

Likely he will be re-elected because the world is populated very veritable zombies, many in the US who will believe things are better. Even if business is better by some standards, what is good for business is always bad for the environment and the people living in it. And I mean always.

Its like this, George Carlin said when people are born, they get a ticket to the freak show, and in the US you get a front row seat. With Trump, do we ever have a freak show?????

No idea. I couldn't predict it the first time and I'm sure I can't predict the next outcome either

I believe his base will re-elect him.

Sadly I think it's quite likely he'll get re-elected. For an interesting/dispiriting primer on what we think we know,I'd recommend reading Ryan Holiday's book, "Trust Me,I'm Lying: Confessions of a Media Manipulator".
Read it,and weep.