Former Obama campaign co-chair will stump for Romney

(CNN) - A former four-term Democratic congressman from Alabama and one time strong supporter of President Barack Obama will campaign for Mitt Romney Wednesday.

A Romney campaign aide confirms to CNN that Artur Davis will stump for the presumptive Republican presidential nominee in the battleground state of Virginia.

Davis, who is black, may be best known for seconding Obama's nomination at the Democratic National Convention in 2008, when he served as an Obama campaign co-chairman. Davis said he had hoped Obama's presidency would make a huge dent in race relations, as well as move the Democratic Party further to the center. (Continues)