Chicago has a history of spoiled votes. Insiders in the election’s department punch or put an X beside a second candidate, invalidating the voter’s original selection.
In the Bush/Gore election, insiders used nails to punch through stacks of ballots for Gore. Ballots that already had Gore selected didn’t change. Ballots that had Bush selected were all invalidated with two candidates selected. The ballots at the bottom of the stack ended up with “dimpled” chads.
You remember that observation!