I've found it's generally not worth it to push the discussion when it comes to politics. People will just dig in and there goes the friendship.
I'm (apparently, or so I'm told) a flaming lefty lib, who recently moved out of the Bay Area to a very "red" part of California. If I limited my friends to only people like me politically, I'd have to be a hermit. I basically take it as given that any new person I strike up a conversation with will not agree with my politics, so I just don't bring it up. Most of my friends got the hint clearly when they brought some of their Trump shit up and I immediately steered the conversation away. We have a good understanding--let's talk about positive things we have in common: hobbies, beer, cars, whatever. Don't bring up politics or religion, and you can make friends with anyone!
Some of them just can't bear to live even a few minutes without talking about their politics at every possible moment, and they're just not friends anymore.