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Republicans and Democrats, liberals and conservatives, also do not consume the same sources of information about news and politics. Conservatives now inhabit their own self-created media echo chamber, which functions as a type of lie-filled and toxic closed episteme and sealed-off universe. The creation of such an alternate reality is an important attribute of fascism, in which truth itself must be destroyed and replaced with fantasies and fictions in support of the leader and his movement.
America's struggle for democracy and freedom against authoritarianism is taking place on a biological level as well. Social psychologists and other researchers have shown that the brain structures of conservative-authoritarians are different than those of more liberal and progressive thinkers. The former are more fear-centered, emphasizing threats and dangers (negativity bias), intolerant of ambiguity and inclined to simple, binary solutions. Conservative-authoritarians are also strongly attracted to moral hierarchy and social dominance behavior.
Recent research by Darren Sherkat, a professor of sociology at Southern Illinois University, demonstrates that America's democracy crisis may be even more intractable than the above evidence suggests. In his recent article "Cognitive Sophistication, Religion, and the Trump Vote," which appeared in the January 2021 edition of Social Science Quarterly, Sherkat examined data from the 2018 General Social Survey and concluded that there are substantial negative differences between the thinking processes and cognition of white Trump voters, as shown in the 2016 presidential election, as compared to other voters who supported Hillary Clinton or another candidate, or who did not vote at all.
https://www.salon.com/2022/03/23/new-research-on-voters-theyre-not-the-sharpest-tools-in-the-box/