This is not relevant to what I said, for several reasons. First, guessing at your beliefs, you almost certainly believe that only one party today is racist; therefore, racism is not an effective issue that runs across party lines. (Note that until the 60's-70's, the South was split between Democrats and Republicans; there were effectively four political groups in the US: racist Democrats, racist Republicans, non-racist Democrats, non-racist Republicans. This screwed with party-based analysis of voting patterns.) The second is that, so far as I know, Congress no longer holds any straight-up-or-down votes on racism ala the Voting Rights Act; racism itself is not an issue, as nobody would vote for it.