MADISON, Wis. (AP) -- Turnout for next week's recall election targeting Gov. Scott Walker is predicted to reach as high as 65 percent.

The Wisconsin Government Accountability Board issued the forecast on Tuesday, a week before the June 5 vote. The board estimates that between 60 percent and 65 percent of those old enough to vote will cast ballots.

Board director Kevin Kennedy says it's difficult to make a prediction since Wisconsin has never had a statewide recall election before.

He says turnout is expected to be higher than the nearly 50 percent in the 2010 general election where Walker won, but less than the 69 percent turnout in the 2008 presidential election.

As of midday Tuesday, at least 130,000 absentee ballots had been issued.

Walker faces Milwaukee Mayor Tom Barrett.