What is the setting of Fear and Loathing: On the Campaign Trail '72 by Hunter S. Thompson?

The perspective is that of a "rock-n-roll journalist." Hunter S. Thompson is a typical American male. He is a journalist and shows signs of wanting a career. He leans to the left politically. His date of birth is not given. There are photographs of him in the book. He seems to be a middle-aged man at the time during which he wrote the book. He is a middle aged man who is well into the development of his career. His work as a journalist has gone on long enough that he no longer refers much to times before that had happened.