You’ve used this unclear worry — you plus potential future partner’s politics will conflict with your loved ones’s which will wreck your whole connection — and turned it into prophecy. Either they won’t believe that you don’t have a similar government as them — that whole guilt by association thing — or that possible potential future combat might be thus horrifying and all-consuming you’ll lose both your loved ones along with your future partner.
Except… you don’t have any experience with this going on anyway. You’ve have countless conjecture, countless creativeness and just about no actual knowledge about it in actual life. Even though I’m certainly available any number of random stories or are we The arsehole stuff which could appear to straight back this fear upwards, those do not really rely. Even making apart those who are pure creative authorship exercises: individuals engaging aren’t family, nor are they any potential gf.
There’re main reasons the plural of “anecdote” isn’t “data”, in the end.
But let’s go through the real specifics here. Your family, despite creating significantly various governmental panorama, have managed to maintain your connection strong. Like some people in blended religious/atheist households, vegetarian/carnivore homes or any other diametrically compared problem, you are capable of making points operate, also your own different stances making folks desire to work their teeth into powder and smack the other up with a Howard Zinn omnibus. Assuming that your and/or your family aren’t, say, QAnons or COVID deniers, believe there have been “very close folk on both sides” during the Unite ideal show in Charlottesville or think the tried insurrection was an Antifa false-flag process, really in theory feasible to no less than bring a “we’re gonna suck a line and then we never get across this range it doesn’t matter what hot items get” type of create. That may significantly help to maintaining a household as a household… even though you’re to the “dual-wielding Disobedience and Democracy, roll for step” phase over supper.
And I’d mention: there are several people that date and wed group whoever family members tend to be gold-plated shitheads. Occasionally most people are capable come together and/or help deliver everyone around. Often it closes using the couple determining that they’re not planning to spending some time with all the fam until said fam becomes their own work collectively.
But that is all theoretical, maybe not genuine. Among larger points to recognize is the fact that this, presumably is not planning to just be your organizing the new gf inside strong end without caution. Ignoring just how long it could or cannot take you to make the journey to the “meet your family” period, I can’t imagine that you mightn’t be offering your theoretic potential future girl an advance notice that you’re the governmental black sheep of parents. Offering your squeeze the essential rundown for the family dynamic try — or need — regular problems before getting the woman towards cousin’s wedding/nephew’s bat mitzvah/little brother’s birthday celebration. That gives your time for you work out exactly how you’re likely to deal with any thorny topics that need to be prevented or handled carefully — political or perhaps.
And, I would hope it’s a given, that I’m hoping neither all your family members or any individual your date will be the type who fades regarding strategy to choose battles with individuals over government; that’s an aggravation of another shade totally.
TL;DR: stop creating your own break-up tale if your wanting to’ve actually have very first big date.
Target finding anybody awesome you click with, develop a relationship to the purpose of in fact exposing the lady towards folks, then work out how to navigate group features. And hey there: 
it’s simpler to temperatures the slings and arrows of household governmental arguments once the two of you can existing a united side and present each other the back-up you want.
