| Election Name: | 1803 United States Senate election in New York |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | April 1800 United States Senate special election in New York |
| Previous Year: | Apr. 1800 (special) |
| Next Election: | November 1804 United States Senate special election in New York |
| Next Year: | Nov. 1804 (special) |
| Election Date: | February 1, 1803 |
| Votes For Election: | Majority vote of legislature needed to win |
| Image1: | File:TheodorusBailey.jpg |
| Nominee1: | Theodorus Bailey |
| Party1: | Democratic-Republican Party (United States) |
| Electoral Vote1: | 59 |
| Percentage1: | 50.86% |
| Nominee2: | John Woodworth |
| Party2: | Democratic-Republican Party (United States) |
| Electoral Vote2: | 57 |
| Percentage2: | 49.14% |
| Senator | |
| Before Election: | Gouvernor Morris |
| Before Party: | Federalist Party (United States) |
| After Election: | Theodorus Bailey |
| After Party: | Democratic-Republican Party (United States) |
The 1803 United States Senate election in New York was held on February 1, 1803, by the New York State Legislature to elect a U.S. Senator (Class 1) to represent the State of New York in the United States Senate.
Gouverneur Morris had been elected in 1800 to complete the term (1797-1803) after Philip Schuyler (1797–98), John Sloss Hobart (1798), William North (1798) and James Watson (1798-1800) had occupied the seat. Morris's term would expire on March 3, 1803.
At the State election in April 1802, the Democratic-Republican Party won a large majority to the Assembly, and all 8 State Senate seats up for renewal. The 26th New York State Legislature met from January 25 to April 6, 1803, at Albany, New York.
The assemblymen of the Democratic-Republican Party met in caucus on January 31. Assemblyman John Woodworth received 45 votes and Congressman Theodorus Bailey 30. Woodworth was nominated as the party's candidate, but State Senator Matthias B. Tallmadge, Bailey's brother-in law, was not satisfied with this nomination. Tallmadge persuaded a part of the Democratic-Republican members to vote for Bailey, abandoning the caucus nominee.
The incumbent Gouverneur Morris ran for re-election as the candidate of the Federalist Party candidate, but in the morning of February 1, before the Legislature met, a State Senate caucus was held and Tallmadge combined with Abraham Van Vechten, the leader of the Federalists, to support Bailey.
On the first ballot in the State Senate, Woodworth received a plurality over Bailey and Morris, for whom all Federalist voted, but no candidate received a majority of the votes. Thereupon a resolution was offered to nominate Bailey, and was carried by the vote of 16 Senators, including 6 Federalists. John Woodworth was nominated by the Assembly. The Legislature then proceeded to a joint ballot, and Bailey was elected in a tight vote by the Democratic-Republican Tallmadge faction and the Federalists.
| Office | House | Democratic-Republican | Democratic-Republican | Federalist | |||
|---|---|---|---|---|---|---|---|
| U.S. Senator | State Senate (31 members) ballot | John Woodworth | Theodorus Bailey | Gouverneur Morris | |||
| State Senate (31 members) resolution | Theodorus Bailey | 16 | |||||
| State Assembly (99 members) | John Woodworth | 53 | Theodorus Bailey | 19 | Gouverneur Morris | 18 | |
| Joint ballot (130 members) | John Woodworth | 57 | Theodorus Bailey | 59 | |||
Bailey resigned on January 16, 1804, after his appointment as Postmaster of New York City. In February 1804, a special election was held by the State Legislature to fill both seats in the U.S. Senate and, either due to a mistake or to give Armstrong two more years to serve, the incumbent appointed Class 3 Senator John Armstrong was elected to the Class 1 seat (term 1803–1809) to succeed Bailey, and John Smith to the Class 3 seat (term 1801–1807) to succeed Armstrong.