Prince George's County Executive Rushern L. Baker III (D) during a 2011 appearance in Annapolis.(Photo by Mark Gail/The Washington Post)

The “honorary hosts” at a June 20 fundraiser for Baker include Gov. Martin O’Malley (D) and three Democrats angling to succeed the governor: Lt. Gov. Anthony G. Brown, Comptroller Peter Franchot and Attorney General Douglas F. Gansler.

Both of the presiding officers of the legislature, Senate President Thomas V. Mike Miller Jr. (D-Calvert) and House Speaker Michael E. Busch (D-Anne Arundel) are also listed on the invitation.

The event, for which tickets start at $250 per person, is being held at Grace’s Mandarin, a restaurant at National Harbor.

Depending on how the next few weeks go, Baker may have an additional reason to celebrate at that location. By June 20, a work group on expanded gambling, launched by O’Malley, should be winding up its work. Baker is a leading proponents of one of the ideas on the work group’s study list: allowing a new casino at National Harbor.