1804–05 United States Senate elections
Senators were elected over a wide range of time throughout 1804 and 1805, and a seat may have been filled months late or remained vacant due to legislative deadlock.Senate party division, 9th Congress (1805–1807) Only reflects results of regular elections.Federalist James A. Bayard was elected November 13, 1804, to finish the term ending the following March.Theodorus Bailey had been elected to the Class 1 seat (term 1803–1809) but resigned on January 16, 1804, after his appointment as Postmaster of New York City.Once again, John Armstrong resigned from the Senate on June 30, 1804 (a third time in three years) when appointed U.S. Minister to France.The incumbent senators effectively switched seats due to appointments and special elections.