Assemblymen were elected countywide on general tickets to a one-year term, the whole assembly being renewed annually.

Solomon Southwick (Dem.-Rep.) was elected Clerk of the Assembly with 42 votes against 31 for the incumbent James Van Ingen (Fed.).

On February 1, 1803, the Legislature elected Theodorus Bailey (Dem.-Rep.) to the U.S. Senate, to succeed Gouverneur Morris (Fed.).

On February 8, 1803, the Legislature elected Abraham G. Lansing (Dem.-Rep.) State Treasurer, to succeed Robert McClellan (Fed.).

Abraham Adriance, Asa Danforth and Jacob Snell changed from the Assembly to the Senate.