My wife and I have put down a very strict no politics discussion or we will literally pack up and leave (precedent has been set). It’s made family gatherings very enjoyable and they all know not to try and see if we’re bluffing. Occasionally after people have had to much to drink, it starts to sneak out a little bit, but a quick “fuck off” or leaving the room gets things back to the agreed upon no politics very quickly. Depending on the family gathering location, we also get a hotel room instead and it gives us a nice reprieve to do our own thing a little bit - go downtown to a nice dinner, bar hop, etc with cousins/family friends who are more like minded. Our families are both really spread out, so people go out of their way to enjoy the limited time we have together, especially as everyone’s families have gotten a lot bigger with marriages over the past couple years. The holidays used to be something we would walk on egg shells as something would always happen, but once we spoke up and laid down the law, things have been so much better. Highly recommend.