A special election was held in Kentucky's 12th congressional district on November 20, 1826 to fill a vacancy caused by the death of Robert P. Henry (J) on August 25, 1826
Election results
Henry took office on December 5, 1825. With his victory, the 12th district changed from Jacksonian control to Adams control, increasing the Adams Party membership by one.
References
Kentucky's 12th congressional district special election, 1826 Wikipedia(Text) CC BY-SA