Maybe Trump, a long-term Democrat who turned quasi-Republican, and mutated the GOP from inside, wanted to further the might of the Democratic Party all along? Imagine this: a secret agent pretends to be all he despises, gets to the very top of the enemy ranks, rots them from the inside, and, hated both by his erstwhile party fellows and his disillusioned rabid supporters, thrusts victory after victory into the hands of its formal (and proclaimed) enemy. In a couple of years he steps down, ridiculed, but keeps his true allegiance secret, like a real hero.
What a movie that could be.