1817 Connecticut's at-large congressional district special election

A special election was held in Connecticut's at-large district in 1817[a] to fill two vacancies in the 15th Congress, both of which had occurred before the start of that Congress. The vacancies were left by the death of members-elect Sylvanus Backus (F) on February 15, 1817, and Charles Dennison (F) who declined the seat.
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