If this is a political fund-raiser, it must be Maryland.

Politicians from Baltimore to Upper Marlboro are at work satisfying cravings for cash to feed their ambitions, even though most refuse to disclose exactly what their ambitions are.

Prince George's County Executive Lawrence J. Hogan, who won't tell whether he's running for executive again, or for governor or senator, has made clear that he wants all his fans to show up on Sept. 24 -- and bring $50 apiece -- at Bronco Billy's, a country-western bar in the District of Columbia.

Coy Benjamin Cardin, speaker of the Maryland House, who only laughs when anyone even hints that he might want to run for governor in 1982, has set aside Nov. 15 for his $50-a-person bash at the National Aquarium in Baltimore.

Meanwhile, silver-haired State Sen. Harry McGuirk (D-Baltimore) is holding a $50-a-person fund-raiser at Martin's West outside Baltimore Oct. 1 and is telling friends he's planning to challenge Harry Hughes for the governorship next year. But nobody believes him.

"You figure McGuirk's got 13 schemes up his sleeve," said one friend. "And this is just the one he's publicizing right now."