You think 90+% black is needed?
It's a SWAG on that percentage, but the idea was to remove black voters from surrounding districts.
I think Boehner's district is about 70% Repo. "Proper" redistricting maximizes the number of >51% districts for your party with sacrificial districts with huge majorities of the opposition.
Alex
"There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."
-- Isaac Asimov