I give him a max of 6 months after the inauguration on January 20th, 2017, before his the vast amounts of personality flaws are manifested to show up in his words and even worse, ACTIONS as president to show all the people who voted for him that it wasn't purely to get attention and get elected.
1) He's a pathological Liar
2) If not that, he is that way, not just in what he says, but his personality, character and actions will show just what we got in this abomination of a mistake.
For those who voted for him just to not vote for Hillary, it will prove to have been better for them not to vote at all, or write-in Bernie or Jeb Bush or whoever else they wanted instead.
For those who voted for Trump purely to not vote for Hillary, I almost look worse upon than those who genuinely wanted Trump as President.
again, 6 months.
July 20th, 2017, if not earlier. If he hasn't embarrassed or displayed that personality that was highly evident for the last 18 months, than I may actually give an ounce of credit. Granted, that hardly seems like it'll give him a massive radical personality change. The man is 70 fucking years old afterall. Far too old to be able to change his personality that dramatically.
But then again, the opposition may eventually get to him so much, he may decide to resign even before the 1st 6 months.
But, President Pence we may find just as many personality flaws, although at least we may be able to guess on them already given how traditional of a Republican he is.