State Sen. Michael Williams, the Republican incumbent for District 27, and Daniel Blackman, a Democrat who is on the ballot for the same seat, debated their opinions and solutions to mass incarceration Monday at University of North Georgia’s Gainesville campus. Students for Sensible Drug Policy hosted the debate. “The other day, at my office in downtown Cumming, I had the chance to engage a young man who unfortunately went to prison because of a heroin addiction he had,” Blackman said.