Factual error: Early in the episode, when Abby complains about who in their right mind would schedule outdoor inaugurations in January, Jed retorts by listing Jefferson, Adams, and Franklin, but inaugurations were in March until 1936 - not a mistake President Bartlet would make.
Factual error: When the president signs Toby's Presidential Pardon you can see his name listed as "Toby." However such a document would refer to someone by their full, legal name. In this case the document should say "Tobias" not Toby, which, although commonly used throughout the series, is still only a nickname.
Continuity mistake: During the entire first half of the episode President Bartlet is using a cane and is walking with a very pronounced limp due the effects of his MS. However after changing from street clothes into a suit to meet the President Elect he is walking fine with no symptoms whatsoever.
Factual error: In the show's final scene Ronna comes into the oval office to remind President Santos that it's nearly 6 PM and he needs to get ready for the various inaugural balls. The Oval Office is filled with sunshine, however in Washington D.C. in January the sun would have set nearly an hour before and it would be dark outside.