Top Illinois Republicans have sued to invalidate the state's new legislative district map drawn by Democrats.
In a lawsuit filed Wednesday in federal court, House Republican leader Tom Cross and Senate Republican leader Christine Radogno contend the map shortchanges blacks and Latinos and dilutes the voting strength of Republicans.
Democrats were in charge of the redistricting process because they control both the Legislature and the governor's office. Gov. Pat Quinn has signed the map into law.
Democrats have defended the map, but it's gotten mixed reviews from community groups. Some praised it for adequately reflecting the state's growing Latino population, while others say it could go further and also better maximize the black voting population in some districts.
The map could be redrawn if the lawsuit is successful.