New Jersey is a decisively Democratic state, but last year Democratic lawmakers there decided to try to cement their power even further.
Hillary Clinton won by 14 percentage points in 2016. Barack Obama won by 17 percentage points before that, and a Republican hasn't won a Senate race there since 1972.
Even so, the state Legislature introduced a plan that would overhaul the map-making process in a way that would guarantee Republicans became a "permanent minority."