Foster's 53-47 margin is holding, with 64% of the returns in. The vote margin is expanding slightly, at 35,619 to 31,960. Oberweis needs to take 55% of the remaining vote to win this.
The AP has their numbers here, the Beacon News is here, and dmsilev is liveblogging all the individual counties here. The largest county, Kane County, has returns here.
Update: Foster Up 53-47, with 74% reporting. Oberweis needs to take 58% of the remaining vote, I don't know where he can find that kind of margin. The district is Republican but not that Republican.
Update 2: 79% reporting, Foster up 53-47: Oberweis needs 61% of the remaining vote.
Update 3: 88% reporting, Foster up 53-47. This one's done.
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