John S. Morgan was a member of the Maryland House of Delegates, representing District 13B, which covered portions of Prince George's County & Howard County Maryland. Along with fellow Republican , he helped unseat incumbent Democrat from office. In 1998, he was defeated by Democrat John A. Giannetti Jr. It was the second time he had faced Giannetti in the general election, the first time being in 1994 when he handily defeated him. Morgan also ran for United States Congress in 1996 against incumbent Steny Hoyer, but was defeated by 14 percentage points.