1) I believe that cheating is vitually equal across the board
2) I do not doubt that cheating takes place in black districts. I have seen no real evidence to suggest that it is any greater in black districts, or poor districts.
3) I believe that the focus of Republicans on minority districts has been cynically devised to a) suppress voter turnout in districts they think will provide Democratic votes, and

seem plausible to those predisposed to think minority and poor districts are more likely to be the places where fraud takes place.