A 3-judge U.S. District Court will hold a trial September 27-29 in McConachie v Illinois State Board of Elections, n.d., 1:21cv-3091. This is the lawsuit over the validity of the Illinois legislative redistricting for the new decade. The Illinois legislature is the only legislature in the nation that has already drawn new legislative districts. Because the 2020 census data isn’t available yet, the legislature used other data from the American Community Survey, which is conducted by the Census Bureau but a far cry from the regular census. Two sets of plaintiffs are asking the court to rule the legislative districts invalid, and to force the legislature to do the job again once the census data is available in August.
An irony is that Illinois legislative district boundaries now may be delayed more than if the legislature had simply waited until the census data is available.
The Illinois legislature has not done any U.S. House redistricting yet.