The lawsuit accuses the Republican party of "packing" as many black voters into as few districts as possible while "bleaching out" all of the other districts, and effectively creating a permanent majority.
State Rep. Mia Butler Garrick says the goal is to eliminate white Democratic voters.
"It's a brilliant strategy," she told The (Columbia, S.C.) State. "[Republicans] base it on what we [black Democrats] have historically said we wanted. And that was to increase the … majority-minority districts to ensure minority representation."
Several similar lawsuits are playing out across the country, filed shortly after the 2010 Census, the newspaper said. The "packing" issue is a common concern among them.