MrMarcello
In a well-ordered universe...
He's doing the rallies to keep his base on board, not out of fear of getting challenged from within, but to keep sufficient base sentiment on his side as the Mueller investigation starts to close in on him.
That and he's a center of attention seeking ass clown. His life is about selling the carnival show to an audience. He needs the adulation to satisfy his id. He's truly a modern day PT Barnum albeit a much worse human being overall.