This was a poll conducted by the Wall Street Journal and NBC News. A couple of considerations for interpreting the findings:
First, unconscious biases may be considerably stronger than people realize, so they may be more nervous than they believe themselves to be with respect to certain characteristics. This is especially true in areas where people believe it's bad to have prejudices.
Second, I wonder how these negatives actually play out when embodied by real people. For example, we're very good at dismissing negatives when they clash with our group allegiances.