A special election was held in New Jersey's at-large congressional district to fill two vacancies caused by the deaths of George Holcombe (J) on January 14, 1828 and Hedge Thompson (A) on July 23, 1828. The elections were held at the same time as the election for the 21st Congress.
Election results
Sinnickson and Randolph took their seats on December 1, 1828. Randolph was also elected to the 21st Congress.
References
New Jersey's at-large congressional district special election, 1828 Wikipedia(Text) CC BY-SA