Wisconsin Democratic U.S. Senate candidate Mandela Barnes highlights his middle class upbringing in his first television ad released Wednesday, after two of his primary challengers have already spent millions on TV spots and as polls show a tightening race.
The winner of the Aug. 9 primary in the battleground state will advance to face Republican Sen. Ron Johnson. He has also been on the air for months and groups backing him have launched multimillion-dollar ad campaigns.
