1820 Massachusetts's 1st congressional district special election

A special election was held in MA's 1st congressional district on October 23, 1820 to fill a vacancy created by the resignation of Jonathan Mason (F) on May 15, 1820. As a majority was not achieved on the first ballot, a second ballot was held November 6, 1820

Election results
Gorham took his seat on November 27, 1820.