A special election was held in Massachusetts's 1st congressional district on September 5, 1796 and November 21, 1796 to fill a vacancy caused by the resignation of Theodore Sedgwick (F) upon his election to the Senate
Election results
Two elections were held due to a majority not being achieved on the first ballot.
Skinner took office on January 27, 1797
References
Massachusetts's 1st congressional district special election, 1796 Wikipedia(Text) CC BY-SA