"The problem is that voters have had their votes taken away from them without them realizing it," he says, referring to the creation of minority-majority districts.
Greenbaum doesn't begrudge Barrow's strategy of playing up his independence, playing it down the middle and not always advertising loudly that he still belongs to the party of his daddy and granddaddy.
"He does cast a vote at times with which the Democratic Party is not happy," Greenbaum says. "But when we invite him to explain his votes, he always comes. He is in direct communication with us all the time, which we feel is very important for a congressman."
Barrow has a way with people, Greenbaum says. And that's why a white Democratic congressman from the Deep South could still have an office in Washington after November.