Continuity mistake: When they are arguing in his bedroom, her scarf and coat are closed at one point, then open, then closed.
Continuity mistake: When the President comes home, right before Sydney tells him that he lost her vote, he is walking up the stairs and unbuttoning his jacket. However, in the next shot, he goes to kiss his daughter, and his jacket is buttoned again.
Other mistake: This error occurs during the scene in which the President and Lewis Rothschild are riding in the limo, just after the President has broken a date with Syndney. The background scenery, visible through the windows of the car, is noticeably in slow motion, even though the car (and the people inside it) are moving at regular speed.
Revealing mistake: In the opening scenes, when the President is walking with Rothschild and his other aides, he leaves the building to walk to the West Wing. In this early morning shot, one would expect the sun to be the only light, but each actor has numerous shadows. (00:03:40)
Factual error: In the scenes of the dinner honoring the President of France, they descend the stairs into the entrance hall and cross towards the State Dining Room. The remaining scenes of the dinner take place in the much larger East Room, completely on the other side of the White House, recognizable from the larger chandeliers and greater size of the room.
Continuity mistake: In the first scene where President Andrew Shepherd encounters his daughter practising the trombone in her room, he talks to her about a parent-teacher conference and hands her a book. In the shot where he hands her the book, it is right side up for the girl to open easily. In the shot where she receives the book, she has to turn it around to open it. (00:10:45)
Continuity mistake: When the two aides are discussing the President, the aide with the beard plops Alka-Seltzer in a glass. It fizzes and then the next shot he's drinking plain water again.
Continuity mistake: In the meeting room with the White House Chief of Staff, Sydney is giving a self-righteous speech about the President being president of Fantasyland. When the President walks into view, she immediately stands up from her chair. Then in the next shot, she immediately stands up again. (00:16:55)
Continuity mistake: The morning after the President and Sydney have spent the night together for the first time, while Sydney is getting dressed to leave, the collar of her turtleneck sits flat in the front (around her neck), but in the next shot the same collar is dog-eared in front, then goes back to sitting flat. (01:06:40)
Other mistake: The scene showing the Capitol Building is a still shot. There are birds flying in front of this scene, but the water and birds actually in the scene aren't moving.
Factual error: At the end of the movie the President gives Sydney roses. She asked him how he was able to give a woman flowers while being the President. His response is "it seems I have a rose garden." This was the night of the State of the Union Address. This happens in late January, no roses would be available this time of year from an outdoor garden in January in Washington DC.