Republican Wisconsin U.S. Sen. Ron Johnson and Democratic challenger Mandela Barnes are to meet Thursday night for their second and final debate before the Nov. 8 election.
Johnson, who is seeking a third term, and Barnes, the lieutenant governor, are locked in a tight race that could determine which party controls the Senate. Their first debate last week, hosted by the Wisconsin Broadcasters Association, was marked by both candidates repeating their well-worn positions, but breaking little new ground.
