Appeal to white supremacists to attempt to build a winning coalition has been a core GOP strategy for more than a half century; that part of the right-wing that isn't itself white supremacist relies on support from white supremacists to advance their agenda. (To be fair, that was true of the Democratic Party instead of the GOP from the founding until the 1960s, but for a couple of breaches between the extreme racists and the rest of the party that were usually healed in short order. White supremacy has always been a powerful enough force in America that it's always been a significant influence on at least one major party.)