Recent research advancing our understanding of partisan cognitive differences finds symmetrical partisan routes to epistemic hubris: intellectual identity and anti-intellectual affect. These researchers conclude that epistemic hubris is largely due to intellectual identity among Democrats and anti-intellectual affect among Republicans. I investigate whether these relationships are purely due to a greater prevalence of intellectual identity among Democrats and anti-intellectual affect among Republicans or if these constructs are particularly potent in producing epistemic hubris among those who identify with their associated parties. I present observational evidence that partisanship conditions the influence of anti-intellectual affect on epistemic hubris but do not find that partisanship conditions the influence of intellectual identity. Based on these findings, we can expect Red America’s increasing anti-intellectualism to contribute to increasing epistemic hubris. More broadly, I provide empirical support for understanding intellectual identity and anti-intellectualism as distinct concepts based on their differing relationships with other fundamental political concepts.