At least one Friend of McHenry County Blog received a phone call from the Jeanne Ives campaign informing the person that the mailed in ballot had been rejected in a signature check.
Here is the email I received:
I received a non-automated call from Jeanne Ives’ team asking about my
ballot that was rejected last week due to a signature non-match.
They asked if I needed any assistance resolving the issue (you need to mail
back the sheet with a copy of your ID).
Thought that was nice, but also interesting to know the ballot rejections list would be apparently easily accessible like that.