They have tactics.
Saying proglibs don't have principles implies they can be bought off. As you can see, that's patently ridiculous. They've got principles all right - chief of which is to assert that their social justice causes warrant the destruction of traditional American values aka "racist bigoted misogynist xenophobic homophobic haters".
Like I've said many times, the real issue is the proverbial 'house divided cannot stand'. Someone is going to win and impose their terms on the losers. I was hoping Trump would lead the charge for patriots, but I've been thinking he just saw an opportunity to satisfy his ego about becoming president. If that's the case, then there are more losses to incur until, like England v Germany, the right is left fighting with just a small patch of territory remaining.