What percentage is the trigger? There are a lot of red districts around Green Bay that are uncounted. Walker will likely win the popular vote on the basis of those three or four counties.
<1% is the point where a candidate can request a recount.
As for the election itself, it's worth noting that even though Milwaukee county is listed as 100% reporting that doesn't include the ~50,000 absentee ballots that won't be counted for another 30 minutes or so.