My family was traditionally extreme right wing (My dad likes Trump, is racist, is a young earth creationist, etc), but both my sister and I ended up being pretty moderate, if slightly liberal leaning (we are both Socially Liberal, Financially Conservative), and my wife, who has similar parents (though not as extreme) is considering voting Democrat (Sanders, but not Hillary, definitely not Trump, if he wins, we might move to Canada - for real)
Anecdata and all that, but I still get along well with my parents, and my wife, hers. We avoid religion and politics (though if it comes up we kinda stay quiet while the other rants, no arguing).
I consider myself Moderate and really don't like the "foam at the mouth" extremes on either side, to be honest, I don't understand the need to go to that extreme, and to fight and argue so passionately about it.