1815 Pennsylvania's 1st congressional district special election

On May 16, 1815, Representative-Elect Jonathan Williams (DR) who'd been elected for PA's 1st congressional district, died before the start of the 14th Congress. A special election was held on October 10 of that year to fill the vacancy left by his death.

Election results
Williams had been the sole Democratic-Republican elected to Pennsylvania's 1st district (a plural district with 4 seats), and so with Sergeant's win, all four of the 1st district's seats were held by Federalists. Sergeant took his seat in the Congress on December 6, 1815