Comment by icegreentea2

It's not just a question of belief, it's also a question of their information environment. The polarization in the electorate isn't just a question of what people believe, but what information their fed. Unfortunately, information environment -> belief -> environment is forms a strong sustaining feedback loop.

It is also worth pointing out that that 83% of republicans (vs 90% of independents) still believe that the government is widely corrupt. Like given the ~20% "crazy threshold" in basically any type of political polling, 80% of republicans is effectively "every single republican you could ever convince".

I would not lose sleep over polarization in this context.