Republicans hope the Illinois Supreme Court will agree the maps are unfair and force new House maps to be redrawn by an independent commission that would not consider partisan benefits.

Republicans argue the map is an example of “extreme partisan gerrymandering,” which renders it unconstitutional under state law.

Democrats continue to hold a supermajority in the Illinois House thanks to illegally gerrymandered House districts, House Republicans allege in a new lawsuit filed with the Illinois Supreme Court ...