Maryland Gov. Martin O’Malley (D) is booked next month as the “special guest” at an annual political event in Iowa, a move certain to further talk of his 2016 national ambitions.

Maryland Gov. Martin O'Malley . (AP Photo/Patrick Semansky)

The visit to Iowa, the nation’s first presidential caucus state, follows closely on the heels of a trip in June to New Hampshire, the nation’s first presidential primary state.

An aide to O’Malley, the chairman of the Democratic Governors Association, said he is appearing at the invitation of Harkin.

Though O’Malley has said little about his plans beyond Maryland, he has taken several steps recently that suggest he is giving serious thought to seeking national office in 2016.

He recently set up a federal political action committee, a vehicle ambitious politicians often to travel the country and donate money to candidates in key states who can be helpful down the road.

O’Malley has also used his DGA perch to become a regular guest on Sunday talk shows.

O’Malley’s term as governor expires in January 2015.