Career

In 1892, he was appointed as tobacco inspector by Governor Frank Brown. He also served as chair of the Democratic State Central Committee. In 1894, Clagett missed election to the United States. House of Representatives by one vote.

Instead, Clagett entered politics when elected as a state senator from Prince George"s County in 1897, serving from 1898–1901 and 1906–1910.

Governor Austin L. Crothers appointed Clagett as the 21st Comptroller of Maryland, replacing Joshua West. Hering who had been appointed to the Maryland Public Service Commission. As of March 2002, Clagett"s farm, Navajo, was still in operation, by the eleventh generation of his family.

After descendant Charles Clagett"s death in 1971, with his will having made clear that he wanted the property used for educational purposes, his estate bequeathed the farm"s 283 acres (115 ha) to the Chesapeake Bay Foundation in 1981.