Personally, I don’t believe that there are many Trump-voting racists who are so ashamed of their choice to be a Trump-voting racist that they keep it secret. There are plenty of extremely vocal Trump voting racists to provide comfort to those who are “shy.” But maybe I’m wrong—it’s kind of hard to prove or disprove the existence of “secret Trump supporters” because they are “secret”. We could just as easily talk about “secret Biden supporters”.
