Instruct: Classify a given review as either positive or negative.
Query: historical and useful

Many years ago I got Kennedy's case. It was a revelation.Now this.I do not know anything better to present political campaings at its best.I've been working with this for many years and have such "manual" is a privilege.The mix between history, methods, journalism, political and marketing knowledge makes these books a seminal work to everybody connected with politics.