Your fundamental point is correct. Black represent about 20% of the total vote, and its by large a christian conservative vote, which is antithetical to the democratic party. What Dubya and Reps leadres need to do is to sell their conservative ideas to black leadership and win them over.
Where do you get that statistic from?
AT the most they are 12%.
Conservaties should not sell their conservative ideas to black leadership when the black leadership is the problem. Rather, Republicans should be on the march creating a new, dynamic cadre of black leaders.