- Iowa Senate Majority Leader Mike Gronstal, Democratic Legislative Campaign Committee Chairman
- Maryland Gov. Martin O’Malley, Democratic Governors Association Chair
- Rep. Steve Israel (D-NY), Democratic Congressional Committee Chair
- Sen. Patty Murray (D-WA), Democratic Senatorial Campaign Committee Chair
Progressive unions, groups and allies are taking on Democratic Party regulars in the June 26 Maryland Democratic gubernatorial primary. But whoever wins faces an unenviable task, even in the deep-blue state: Trying to dislodge popular GOP Gov. Larry Hogan in November.
On the party regulars’ side, former Democratic Gov. Martin O’Malley became the latest regular backer of the other leader, Prince George’s County Executive Rushern Baker. O’Malley joined former Gov. Parris Glendening, state Attorney General Brian Frosh and U.S. House Minority Whip Steny Hoyer in backing Baker.