Illinois will be down to 16 or 17 EV’s in 2032, and Brandon Johnson will probably finish 2rd or 4th in the 2027 Mayoral race, only to be replaced by a literal communist.
Those thoughts have some merits.
As Chicago shrinks (you don't live in Chicago, you leave Chicago), Illinois has gradually become more Republican on average, but the pace is so glacial that it will take a decade for it to be competitive.
As for fast shrinking cities becoming more radical because any opposing voter simply leaves, well there is Detroit as an example.