A special election was held in Maryland's 4th congressional district on October 1, 1810 to fill a vacancy in the 11th Congress left by the resignation, on May 14, 1810, of the previous incumbent, Roger Nelson (DR). This election was held at the same time as the general election for the 12th Congress.
Election results
Ringgold also won election to the 12th Congress. He took his seat in the 11th Congress on December 7, 1810
References
Maryland's 4th congressional district special election, 1810 Wikipedia(Text) CC BY-SA