IMO, a long time before. He had to lose to finish draining the swamp. The swamp is deep and wide and he realized early in his first time it was going to take longer than he thought. No way he could spend another four years fighting them while running the country. They had/have to go to get the country back.
it makes me wonder if some of our smelly pub traitors are also playing a role....the role to denounce Trump etc....