Back in the 1950s the two parties were not that far apart. The differences between Truman, Ike weren't big. Then in the 1960s and on, a similar story, Kennedy, Johnson, Nixon, Reagan, Bush, even Clinton, were no where near as far apart as today between Trump/Desantis and the democrat candidates, Biden, Kamala, Newsom, Warren, Bernie Sanders, & Buttplug.
Here is a video that may answer your questions:
That doesn't answer my questions at all, because those thoughts of his are made from thin air. It's all made up. As a matter of fact, the very things he accuses others of not wanting or doing, is exactly what those same folks want. The problem that guy has, he tries to distort the truth by scapegoating. He doesn't see through the entire prism at all.
Here's what I am talking about; all of us want the same damn things, and for a while, a large population of us did. Here's where that broke down and the answer is simple. Once the wealthy took charge of our economy, that's when the country drifted apart. You see, at the end of the day, it's all about the money, our safety and security. When the wealthy stopped supporting a middle class by way of its high tax rates, everything stood still. The Vulture Chart teaches this; Once you break the back of the middle class, then the blame game begins. It's all by design. It's how the Romans controlled the peasants and slaves. The partisanship wasn't born from me being a Democrat, it was born from greed of a very few number of people. When the middle class falls, so does everything else. I've been trying to explain this for decades, and the other side doesn't get it.