> A lot of votes vote one way or the other because they would simply never vote for the other.

This, for me, is the crux. Politics is treated like a team sport in the US, you pick your side and cheer them on no matter what. And team sports in America are even more bananas - you grow up supporting the Brooklyn Dodgers and a few years later they're 2.5k miles away with a new name. This seems a perfect example of what's happened / happening to the Republican Party - it's not the same party any more, but everyone who tied their entire personality to cheering for the red team is still cheering for it as it burns the country to the ground. I predict that inside ten years it will have also had the name change and probably be run out of Florida or somewhere.