Maryland Gov. Martin O'Malley is set to become the new head of the Democratic Governors Association, a source with knowledge of the appointment confirmed to The Ballot Box.

O'Malley and the rest of the DGA's incoming leadership team will be unveiled Wednesday at an event in Washington. 

O’Malley’s appointment to the committee's top job was first reported by Politico. 

The governor won his rematch with former Gov. Bob Ehrlich (R) last cycle. During a tough year for Democrats nationally, O’Malley won by almost 15 points, raising about $8 million for his effort. 

This won't be O’Malley's first stint at the DGA. He spent two years as vice chairman of the committee. He also served as the group's finance chairman, where he helped it beef up its fundraising apparatus.

O’Malley has his work cut out for him. Three states hold governors races in 2011, while 11 governorships are up in 2012.  

Delaware Gov. Jack Markell led the committee through the 2010 cycle.