I think the Military Leaders would 'take over from him" before they allow him to destroy what millions of other military people have fought and died for, to preserve this Democracy. They will only go along with so much of the madness of Trump. The Military Can seize power from him and demand a New Election within 6 months.
The Right-Wing Cult Constituency, who always want to claim the words "My Freedoms", would be rudely awakened to what they have supported, when he shows them that gerrymandering was only a mild form of containment when he would try his extreme version of containment.
The Right Winger's would quickly find out their lust for Racist Segregationist Idiocy, entraps them more than it will entrap anyone else. They would either rise up or accept being peon subjects of a dictator. Now, we do know that some are already with that devotional consumption, and they will go full-on rabid when he tries to come for their guns.
Their lust for "Money" would be another point that would make them lose every pretentious bit of being respecters of American Democracy.
They would go straight out savage upon and against Trump and his regime when he's trying to "ration them money" and put them under full "plutocratic control and treat them like "sharecroppers', who remain indebted no matter what they do.
Between their "lust for money" and "their love of racist bias and bigotry"... have to face the fact, they are thought of no more than anyone else through the eyes and mind of Trump.... some attack each other as they scramble trying to pretend to be more important than the other, and trying to get another's money.
They'd quickly find out that delusion of "skin color madness" will expose just how much they can't and don't care much for each other, and that there is no "one way of living, just because they have white skin.
Some might even awaken to how stupid racism is.... and it will be likely his own cult followers who will take down the Cult Dictator themselves when they realize how much of a fool they've been made of, and how ignorant they have been to have accepted being led by racist ignorance and the greed lust for money.
Thank you for your thought provoking reply.
However, it won't be a 'coup' it will be a step by step acquisition of incremental power by pushing the legal envelops ( which he's demonstrated he is perfectly capable of doing ).
I believe that the term 'insidious' describes Trump in the most perfect way.
Many people get the meaning of that word wrong, i.e., because it sounds like 'hideous' and 'invidious' it's often used in that context, but it does not mean these things entirely, and the distinction is important.
Insidious means a gradual change from being initially attractive and alluring (could be a person, a thing, an idea or movement, a policy, a trend, etc ), to being disastrous to such an extent extrication from it is no longer possible, insidious means we've gone from being what we thought would be a good thing, to suddenly realizing, due to incremental shifting, that it's magnanimously evil and it's too late to do anything about it. *Hitler is the quintessential example of "insidious".
No word describes Trump better than 'insidious'. Now, for many of us, if not most of us, we knew all along that making Trump president would result in a disaster, eventually, all that is needed to reveal his danger to Society is a crisis, yet even during this crisis, many still cannot see the hidden danger that is Trump, they have become so mesmerized that it would literally take him shooting someone on 5th avenue to wake them up, and even then they would still rationalize it in some way. ( "he got what was coming to him" or some kind of moronic rationalization ).
It's obvious, when Trump goes on script, that he's got handlers who tell him what to say to avert the disaster of his terrible instincts. He's got Miller, who is much smarter than Trump, and therefore much more dangerous.
(*I suspect a few will confuse my comment as comparing Trump to Hitler. No, I didn't do that, all I did was assert that Hitler was the quintessential example of what the word 'insidious' can mean -- don't put words in my mouth, in case you are so inclined).