The suit claims mapmakers improperly considered the partisan makeup of each district.
The Florida Supreme Court ordered the Legislature to redraw eight of 27 districts.
In a 5-4 decision, the justices approved the use of an independent commission in Arizona.
The court said too many black voters had been packed into the 3rd District.
A bipartisan duo in the House has introduced legislation to ensure independent redistricting commissions stay in place amid a pending Supreme Court case.
The justices questioned whether black voters are spread across enough districts.
The 5-4 decision saw Justice Anthony Kennedy siding with the more liberal justices.
During oral arguments the court appeared skeptical of such a commission in place in Arizona.
Benjamin Goad 06/02/14 10:24 AM EDT
The state’s GOP-controlled legislature is accused of racial gerrymandering.