Trying to explain Statesian politics on the basis of "cult/non-cult" is irrational. It substitutes materialist analysis in favor of an aristocratic view that sees Republicans as stupid, and non-Republicans as intelligent. This, however, isn't how society works. Instead, the importance is in the class struggle, and the self-interested competing groups of capitalists that head the DNC and GOP. The DNC has a "harder" time because they both try to gain the votes of the working classes while never actually addressing working class issues, nor even codifying social protections properly despite having the ability.
Trying to pretend Marxists are simply duped by conservative media again isn't a materialist analysis. Socialist critique of imperialist parties, DNC or GOP, is consistent, not an inorganic phenomenon.