Prof. Kleiman, on getting CAPPED:

conservatism has never gone through the process of separating itself from the bigots, as liberalism separated itself from the communists during the Cold War period. Conservative politicians are delighted to receive the support of bigoted voters, the dollars of bigoted contributors, and the endorsements of bigoted TV preachers, and reluctant to do anything to alienate that large chunk of the 'base.'

He's right, but then again conservatives have not seen any political reason to do so. In fact, throughout the history of American politics, the side that best speaks the "code" of racial politics is the one that wins elections most frequently. Bigots outnumber blacks in the electorate, and for the GOP to renounce the "code" would place them in the same situation that LBJ perceived for the Democrats after he signed the Voting Rights Act.