This could be a major upset in the making.

Self-identified Tea Party candidate Joe Walsh was leading by 834 votes at 10:28 PM, according to the Associated Press.

All of the votes cast today in McHenry County have been tallied. You can see the results below for the 8th Congressional District.

Early and absentee ballots have not yet been folded into these numbers for McHenry County.

McHenry County totals without the early and absentee ballots stand at

• Walsh 19,103
• Bean 15,769
• Scheurer 1,572

That means Walsh is leading Bean among McHenry County voters 3,334 votes.