Historian response
Eric Foner (Columbia University), a Pulitzer Prize-winning historian of the period, claimed in a letter to The New York Times that "The film grossly exaggerates the possibility that by January 1865 the war might have ended with slavery still intact." He also noted, "The 13th Amendment originated not with Lincoln but with a petition campaign early in 1864 organized by the Women's National Loyal League, an organization of abolitionist women headed by Susan B. Anthony and Elizabeth Cady Stanton." Kate Masur (Northwestern University) accused the film of oversimplifying the role of blacks in abolition and dismissed the effort as "an opportunity squandered" in an op-ed for The New York Times. Harold Holzer, the co-chair of the Abraham Lincoln Bicentennial Foundation and author of more than 40 books, served as a consultant to the film and praised it, but also observed that there is "no shortage of small historical bloopers in the movie" in a piece for The Daily Beast. Holzer states, "As for the Spielberg movie's opening scene ... it is almost inconceivable that any uniformed soldier of the day (or civilians, for that matter) would have memorized a speech that, however ingrained in modern memory, did not achieve any semblance of a national reputation until the 20th century."
Barry Bradford, a member of the Organization of American Historians, offered an analysis of some of the finer historical points of the film's representation of clothing, relationships and appearance. Allen Guelzo (Gettysburg College), also writing for The Daily Beast, had some plot criticism, but disagreed with Holzer: "The pains that have been taken in the name of historical authenticity in this movie are worth hailing just on their own terms". In a later interview with the World Socialist Web Site, Guelzo claimed that "the film was 90 percent on the mark, which given the way Hollywood usually does history is saying something" and that it "got with reasonable accuracy a lot of Lincoln's character, the characters of the main protagonists, and the overall debate over the 13th Amendment. The acting and screenwriting were especially well done... I had never thought that Daniel Day-Lewis was acting, because what he portrayed seemed so close to my own mental image of what Lincoln must have been like." A historian has suggested that the depiction of Lincoln's high pitched voice, somewhat awkward mannerisms and even how he walked was remarkably accurate.
David Stewart, an independent historical author, writing for History News Network, described Spielberg's work as "reasonably solid history", and told readers of HNN to "go see it with a clear conscience". Lincoln biographer Ronald White also admired the film, though he noted a few mistakes and pointed out in an interview with NPR, "Is every word true? No."
Historian Joshua M. Zeitz, writing in The Atlantic, noted some minor mistakes, but concluded that "Lincoln is not a perfect film, but it is an important film". Following a screening during the film's opening weekend, the Minnesota Civil War Commemoration Task Force held a panel discussion in which Dr. David Woodard of Concordia University remarked: "I always look at these films to see if a regular person who wasn't a 'Lincoln nut' would want to read a book about it after they watched the movie. I get the impression that most people who are not history buffs will now want to read something about Lincoln."
Regarding the historical source material for Kushner's screenplay, legal historian Michael Vorenberg, a professor at Brown University and author of Final Freedom: The Civil War, The Abolition of Slavery, and the Thirteenth Amendment, noted several details throughout the film that "could only have come from [his] book." Among these details were specifics of dealings between Democrats and Thaddeus Stevens, the story behind securing Alexander Coffroth's vote and the fact that African Americans were present in the congressional galleries during the final vote. Ultimately, Kushner replied directly to inquiries from The New Republic writer Timothy Noah, explaining that while he had read Vorenberg's book and many others as research, he insists that Team of Rivals was his principal source material.
Regarding the portrayal of Lincoln's final moments, editor Rhoda Sneller of Abraham Lincoln Online, references a diary entry from Secretary of the Navy Gideon Welles. The entry conflicts with the final scenes in the film in which the dying Lincoln is seen dressed in a nightgown, hunched over in his bed. Welles wrote "The giant sufferer lay extended diagonally across the bed," and "he had been stripped of his clothes." The differences between the first hand account and the present Lincoln serve to paint a more concise and dignified image of the president's death.