Factual error: We see John Cusack enter City Hall and turn right past the guard to meet Pacino, the Mayor in his office. In reality in New York's City Hall, the City Council occupies the right side of the building and the Mayor occupies the left side of the building.
Factual error: The train when they go upstate NY has the colors of New Jersey transit, with the word New Jersey transit covered up with gray tape. Only Amtrak goes upstate New York.
Factual error: Carousel was not playing on Broadway in 1996, when the movie is set. We see an outside shot of the Carousel marquee on Broadway with the mayor inside watching a full scale production. A U.S. National tour with a scaled-down production began in February 1996 in Houston and closed in May 1997 in Providence, Rhode Island.