The three Republican candidates vying for the District 4 Public Service Commission seat in the May 20 primary have many differences, but there’s one glaring thing they have in common. Incumbent Lauren “Bubba” McDonald, Hall County Commissioner Craig Lutz and Lavonia general practice attorney Doug Kidd each face the challenge of explaining to voters exactly what the commission does and its role in serving Georgians. “I’m finding that very, very few people know the significance of this role that we are running for,” Lutz said.