A new poll from the Marquette University Law School puts the race for governor at a tie.
Among likely voters, 47 percent each support Governor Walker and his Democratic challenger Tony Evers. The margin of error is three percent.
Earlier this month, Walker had a one-point lead in the Marquette poll.
In the U.S. Senate race, Democratic U.S. Senator Tammy Baldwin leads Republican state Senator Leah Vukmir, 54 to 43 percent.
The race for state attorney general is also close. Republican A.G. Brad Schimel is ahead of Democrat Josh Kaul, 47 to 45 percent.