There's no "trick" to influencing a narcissist who is as severely impaired as Trump. He invariably agrees with the last person to whom he's spoken, provided said person has been savvy enough to stroke his warped ego in the proper fashion. Trump demonstrated this time and time again during his first administration.
There is no better Trump. So expect more of the same should he be elected again.
Someone pissed in your Fruit Loops this morning
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But therefore buying the people closest to him is the best way to influence him. Harder for foreign influences to get close to him directly at this point.