I tell you to look at the history because I agree, the Republicans are Nazis… And a centrist left conceded power to them or had it stolen then too.

This is precisely why you should vote for Democrats. The Nazi rise to power is a cautionary tale of what happens when both liberals and leftists don’t take the fascist threat seriously. They’ll play off the fascists to try and get one over the other – you’ve pointed this out with the centrist left already, and how they gave him power. But it’s also important to recognize that the leftists weren’t terribly concerned either. “After Hitler, us!”. They foolishly thought the fascists would let there be an “after” and resigned themselves.

There is only one path forward, and I like to explain it in terms of LotR. The dwarves and elves may dislike each other and sometimes be on the verge of war, but as soon as the orcs appear, they work together as one. The fascists warrant our full attention and scorn. We can never make the same mistake of the Germans to let animosity among those left of center take priority over stomping out fascists.