20 percent turnout predicted for Wisconsin primary - WKOW 27: Madison, WI Breaking News, Weather and Sports

MADISON (WKOW) -- State election officials are predicting 20 percent of Wisconsin's voting-age population will turn out for next month's primary. That's about 870,500 voters.

The Wisconsin Government Accountability Board released its prediction for the primary Tuesday, three weeks before the election.

The prediction for the August 14 primary is the highest turnout in a non-gubernatorial fall primary in the past 20 years was 21 percent in 1992.

This is the first year that Wisconsin's fall primary comes in August. It used to be in September.

On next month's ballot, voters will vote in primaries for a four-way Republican race for the U.S. Senate, two of eight congressional districts, five of 16 state Senate districts and 39 of 99 Assembly districts.