They don't. Look at the precinct level breakdown of the voting in the mayoral election and you'll see the same pattern as in the 2020 Presidential-year election: many of the poorest, blackest precincts reported 90+% voter turnout, which you couldn't get offering a free bucket of chicken and complementary malt liquor in those neighborhoods.
Fraud pushed Johnson over the top, just like it did Biden in 2020, and probably will again with whatever sock puppet the regime chooses in 2020.
It was also young white hipsters and professionals in north side enclaves towards the Lake, like Edgewater and Andersonville, that backed Johnson.
Nice theory - but the reality is - the Leftists are firmly in control of the ChiCongo... and the majority there support the leadership. Denial doesn’t change that. Suspicious (fraud) voter turnout doesn’t change it - just change the order of magnitude.