- Before JD Vance was a political figure, he was the author of the bestselling book "Hillbilly Elegy."
- He's changed a lot in the eight years since the book published. But some things remain the same.
- The book now serves as an important psychological portrait of Trump's running mate.
When JD Vance re-introduced himself to the country and accepted the Republican Party's vice presidential nomination on Wednesday night, the Ohio senator's speech made no direct mention of the best-selling autobiography that powered his rise to national fame in 2016 and has dominated Amazon's bestseller list since Tuesday.