I think it's a difference in how we define words. If we focus on our common ground, first, then we are more likely to listen to each other. To a person who identifies as centrist, a person who calls themselves liberal might appear to be on the fringe of society IF the so-called centrist (who may even actually be liberal) is within a community where they are surrounded by more conservative voices.

Being with my husband has taught me that how we individually define words matters a lot more than we think. He and I grew up in very different circumstances and will often argue different points and then get extremely frustrated at each other for not understanding what we mean. Sometimes I'm thinking "what is he saying, that has nothing to do with what I'm talking about" only to realize that the way he defines a word, phrase, or idea is completely different to my definition.

If you want someone to truly listen to you, you first have to be open to discovering what's important to them and how they are expressing it

For America I'm what used to be a centrist, but now unfortunately I would be considered far left. I hate what we have become. Vote blue!

Green is better but not enough people even know about the Green party that it would be viable

Yeah, as it turns out, when you actually hear out both sides, it becomes very clear that one side is, for the most part, completely full of shit. And that the other side barely pays lip service to their supposed beliefs, even though they're somewhat correct.

If you start out right in the middle, and then every time you find out that you're wrong about something, change your mind on that topic, overtime you'll shift further and further left. Not to say being the most left is correct, but the vast majority of correct answers to topics lie to the left of Democrats, while most of the obviously false ones lie within the beliefs of establishment Dems and Republicans.