Washington (CNN) - This rematch is getting interesting.
Former Maryland Gov. Robert Ehrlich on Wednesday kicked off his bid to get his old office back. The person he's challenging is current Gov. Martin O'Malley - the man who knocked him out of office four years ago.
"Welcome to history, part two," Ehrlich, a Republican, told a crowd in Rockville, Maryland, which is located in the heavily Democratic Montgomery County.
Ehrlich was scheduled to hold a rally later Wednesday in Baltimore County, the area he represented in Congress for eight years.