Was initially rather shocked by those Lake County numbers but apparently there just actually was a 20K undervote on the amendment.
Kind of amazing how much you can see the old party coalitions in this result. Huge over performance downstate in places like Vermillion or Gallatin, retaining old Dem holdouts like Knox, but way under performing in richest two collar counties.
It's still quite underperforming the gubernatorial vote share, though; the amendment is getting 55.4% of the vote compared to Pritzker's 59.4% so far (ditto DuPage where it's getting 53.1% vs. Pritzker's 55.9%). I'm not too surprised - these areas are still fairly fiscally conservative even though they have shifted to Democrats. You could see a similar pattern with 2020's Fair Tax Amendment.
Will County is seeing the biggest overperformance of all the collar counties (getting an 8% higher vote share than Pritzker!), which harkens back to the days when it was the most Democratic of the collars.
Good map illustrating the measure's overperformance in downstate Illinois vs its underperformance in Chicagoland. There were some questionable takes on Twitter about how the vote demonstrated educational polarization even on socioeconomic issues but the actual numbers suggest otherwise.
https://twitter.com/PviGuy/status/1592378510219563008
