Illinois House Minority Leader Tony McCombie, R-Savanna, at the state Capitol Tuesday, Jan. 28, 2025, in Springfield, Ill., announces at a news conference that she has joined five Illinois voters in filing a lawsuit asking the state Supreme Court to declare as unconstitutional the legislative district map drawn in 2021 by majority Democrats. (AP Photo/John O'Connor)

Illinois state Rep. Ryan Spain, R-Peoria, discusses a dot chart prepared by University of Michigan research Jowei Chen showing diluted Republican voting power because of gerrymandering in the legislative district map, at the state Capitol Tuesday, Jan. 28, 2025, in Springfield, Ill. House Minority Leader Tony McCombie, R-Savanna, holds the chart. (AP Photo/John O'Connor)

Illinois state Rep. Dan Ugaste, R-Geneva, discusses a lawsuit Republicans have filed asking the state Supreme Court to declare as unconstitutional the legislative district map drawn in 2021 by majority Democrats, at the state Capitol Tuesday, Jan. 28, 2025, in Springfield, Ill. (AP Photo/John O'Connor)