I thank God that none of my 9 siblings nor my parents are liberal, we are all broken-glass conservatives. All their spouses and children are also. That's a lot of conservatives in just one family, LOL, because my 9 siblings have all had large families themselves, averaging 6 kids.
If one was a liberal, I don't suppose I'd disown them if they didn't get all crazy and in my face about it, but I certainly couldn't go out of my way to have much contact with them. It's not "just" politics, we are culturally conservative Christians and our whole worldview would be opposed. We just wouldn't have anything in common with a liberal.