You could add Kennedy's "Profiles in Courage" and a few others I think (Huey Long and "Every Man a King" for instance). In the case of both Kennedy and Obama t

You could add Kennedy's "Profiles in Courage" and a few others I think (Huey Long and "Every Man a King" for instance). In the case of both Kennedy and Obama the book was used in combination with great oratory skill to introduce the candidate to the people: You hear an amazing speech by the candidate and want to learn more. You find they have written a book and decide to read it. The book gives you a feeling of intimacy with the candidate which turns you into a supporter.