Donald Trump — He is not running for President under any circumstances. Pretending to run keeps his name in the public eye, which benefits his brand. Trump is the fourth greatest marketer in history behind P.T. Barnum, Madonna and boxing promoter Don King. Trump was put on this earth to be a real estate king. While he is absolutely qualified to run the country, he will not run.
When he gives an order, his subordinates have to obey his instructions. Real power is not in the presidency, where any number of special interests can block an agenda. Dealing with a zoning board is easy compared to a wavering member of Congress. Trump has the closest thing to absolute power, and he will not relinquish that to trudge in the snow. Plus, he finds shaking hands barbaric and unsanitary. The campaign trail requires doing this.