The FiveThirtyEight Blog Releases the Atlas of Redistricting, The Maps are Impressive but Unusable  FiveThirtyEight takes a comprehensive look at the mapping possibilities for every congressional district in the nation.  None of the maps would pass legal muster though.  At best, the Atlas of Redistricting is a rough thought experiment that can give us a good idea of what different redistricting priorities produce on a map - - just in very very broad brushstrokes.  read more. Pennsylvania Republicans appeal congressional map partisan gerrymander decision to the U.S. Supreme Court.  In a long-shot bid, Republicans appeal the state supreme court's decision…