The atmosphere is so heated, and the statements are getting more and more extreme. Let’s just assume Harris wins the election. After a campaign like this, how could you ever have a normal relationship with your pro-Trump neighbor/father-in-law/Uncle/Barber or what ever again?
Let’s assume that they are not bad people. In order to bring them to sanity, it would take an ungodly amount of pressure, and they would have to have no connections back to the cult. If there is even a single connection all the effort would be for naught.
They are not where they are, due to logic or empathy, so you can’t use logic or empathy to argue them out of it. I lost my entire extended family over this.