I see that there’s a movement to split downstate Illinois from the Chicago area. However dissed the downstates feel that wouldn’t leave a viable state. Of Illinois’s ten largest cities, six are part of the Chicago metropolitan area and an even larger share of the state’s domestic product. Outside the Chicago metropolitan area, the state’s largest city is Rockford at 150,000. Downstate would not be Indiana. It wouldn’t even be Iowa.
If the people living downstate really want to leave Chicago to its own devices, they should divide the state into small chunks of which part would federate with Iowa, part with Wisconsin, part with Missouri, part with Indiana, and part with Kentucky. If I still lived in Missouri there’s no way in hell I would accept East St. Louis.