Fewer than one in five eligible voters in Wisconsin voted in the recent primary election.
The state Government Accountability Board had predicted turnout of 20%. The actual turnout was about 18%.
The main contested race was the Republican primary for U.S. Senate, won by Tommy Thompson. About 582,000 votes were cast in that four-way race.
Democratic candidate Tammy Baldwin ran unopposed. She got about 186,000 votes.
Turnout had been high in recent elections. Nearly 58% of voting-age adults turned out for the historic recall election in June.
However, the recalls, along with all the campaigning that preceded them, may have led to voter fatigue. The voters who cast ballots in the Aug. 14 primary represented 18% of the state's 4.35 million eligible voters.
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