Original sentence: Since no state has had a black majority since the 1940s, black candidates cannot be elected to the United States Senate by black voters alone.This process was naturally supported by black Democrats, but it was also supported by Republicans, since the process of segregating black voters into black majority districts required removing the overwhelmingly Democratic black voters from all the other districts, making them easier for Republicans to win
Edited sentence: Since no state has had a black majority since the 1940s, blacks can only be elected to the United States Senate with the assistance of white voters.This process was naturally supported by black Democrats, but it was also supported by Republicans, since the process of segregating black voters into black majority districts required removing black voters from all the other districts, making them easier for Republicans to win