Trump's people have founded their Party:

[David Horn]

Let's assume that the Trumpster is actually behind the Patriot Party and not just a willing participant in someone else's fantasy. If so, then having this in his back pocket makes the GOP regulars less likely to buck him out right. It appears, to them, that he has less to lose than they do, when the opposite is closer to the mark. Without the GOP, Trump is just another blowhard without an audience.