i only have my father left, but both my parents were always latin-american leftists and so were most of my siblings.
most of my siblings married maga-white people and their children (as well as their children) are maga and my father and siblings have become maga-sympathetic as a result.
only my sister and i remain leftists and i'm convinced it was entirely because we were the only ones to marry other latinos. we both keep our distance for the rest of our family. it's been 10 years since she's seen the rest of the family and i decided to do the same thing last xmas. we only visit cousins/aunts/uncles that have maintained ties with our latin-american origins and that luckily happens to coincide with our politics.
my father still tries to maintain our relationship; but i suspect that it has more to do w my aunts/uncles prodding him to do so and it didn't start happening until i told them about my decision last xmas.