44 US §2201
(3) The term "personal records" means all documentary materials, or any reasonably segregable portion thereof, of a purely private or nonpublic character which do not relate to or have an effect upon the carrying out of the constitutional, statutory, or other official or ceremonial duties of the President. Such term includes--

(A) diaries, journals, or other personal notes serving as the functional equivalent of a diary or journal which are not prepared or utilized for, or circulated or communicated in the course of, transacting Government business;

(B) materials relating to private political associations, and having no relation to or direct effect upon the carrying out of constitutional, statutory, or other official or ceremonial duties of the President; and

(C) materials relating exclusively to the President’s own election to the office of the Presidency; and materials directly relating to the election of a particular individual or individuals to Federal, State, or local office, which have no relation to or direct effect upon the carrying out of constitutional, statutory, or other official or ceremonial duties of the President.