2003 was between the presidential election and the midterm election year in the United States.
- The second presidential inauguration of Josiah Bartlet
- Zoey Bartlet kidnapping.
- John Hoynes resignes the Vice Presidency of the United States
- Glen Allen Walken becomes Acting President of the United States.
Events of The West Wing
- January : events of Guns Not Butter
- January 13-20 : events of Inauguration (Part I)
- January 20 : events of Inauguration: Over There (Part II)
- February : events of The Long Goodbye, The California 47th, Red Haven's on Fire
- late February - early March : events of Privateers, Angel Maintenance
- late March : events of Evidence of Things Not Seen and Life on Mars
- May 7-10 : events of Commencement, Twenty-Five, 7A WF 83429, The Dogs of War
- July 4 : events of Jefferson Lives
- late July : events of Han
- October : events of A Constituency of One and Disaster Relief
- November : events of Separation of Powers and Shutdown
- early December : events of Abu el Banat
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