The latest Fox News poll finds tight races for U.S. Senate and guv.
In the Senate race, 48 percent of those who have already voted or said they are certain to cast a ballot favored GOP incumbent Ron Johnson, while 46 percent backed Dem Mandela Barnes. A month ago, it was a 50-45 margin in Johnson's favor.
In the guv's race, 48 percent of those who have said they have already voted or are certain t...
