1820 Pennsylvania's 5th congressional district special election

On May 15, 1820, David Fullerton (DR) of PA's 5th congressional district resigned from his seat in the House of Representatives. A special election was held on October 10, 1820 to fill the resulting vacancy. This election was held on the same day as the election for the 17th Congress.

Election results
McCullough took his seat November 13, 1820