I think it would vary a lot depending on the specific decisions and how unique the combination of circumstances are. Even though things tend to repeat on a large enough scale, different combinations can still be highly unique.

OTOH when they are not... a simple exercise one can do is go ask GPT-4 to simulate a comment section on some political news story posted online; you can even have it write a fictional news story first, for good measure. It is extremely good at it, and that tells me volumes about the actual (rather than perceived) rationality of our public discourse.