Dem U.S. Senate candidate Mandela Barnes and the groups backing him have significantly closed the spending gap with GOP U.S. Sen. Ron Johnson and his allies on paid media over the final four weeks of the race.
As of Sept. 27, Johnson, of Oshkosh, and the groups backing him had a $3.2 million advantage through Election Day on TV, radio and digital, according to AdImpact.
As of information posted sh...
