Stop winning significantly more than any other republican in the time I've been politically aware. And/or mass amnesty, concrete evidence he raped a kid, mass gun confiscation, did something else particularly satanic etc.
As it stands I'm willing to accept or overlook a lot about Trump because, in addition to not needing my candidate to 100% agree with me on everything or IT'S OVER/NEVER EVEN BEGAN etc, he is getting measurably closer to the way I want things to be. If he's everything people say he is; a retarded elderly senile ZOGbot giving tax breaks to cronies and passing antisneeditism boycott laws- but is doing mass deportations, dismantling lower-court judicial fiat and faulty rulings by helping cases go to the SC, entering into peace talks internationally to prevent conflicts and not dragging America into boots-on-the-ground forever wars over an oily sandpit, attempting to close trade imbalances and reshore manufacturing, removing anti-merit systems in the government and military, and many other things, I'm still going to support him because I want to win and he is the closest we have to it.