Milk and Cereal: has it ever occured to you that it's in the economic interest of *most* Blacks to vote Democratic? And IIRC the 90% figures only started after a certain race baiting advert in 1988...
Are you truly claiming that blacks voted in significantly higher numbers for Republicans before 1988? That's simply not true. The last time a Republican candidate got any type of black support was Nixon in 1960.
He said the 90% figures, not 'significantly' higher numbers. Pre-1990s, Democrats had gotten about 75-80% of the Black vote not 90%.