I think that African Americans as a group tend to vote for Democrats because the party is perceived to have been more devoted to issues that particularly affect African Americans as a group in recent history affordable and quality healthcare lowering the unemployment and poverty rate civil rights legislation particularly during and after the s and s and so forth  The Republican has not had a strong civil rights reputation since the New Deal when the parties seem to have switched key playforms and attracted different constituencies  This should be mentioned but only if mentioned in context  Im not qualified to expand on this so I hope someone else who is more knowledgeable does  Kemet  April