This is a great short read. Period. It discusses the different approach liberals and conservatives have taken over the last 30 years and how it has affected politics in the US. Fair warning: the book will not be easy to read if you are a liberal. It is highly critical of the approach present-day liberalism has taken.
The book is about 2.5 hrs in length. It is worth every minute. The author criticizes democrats but does so out of fear for his own party. He does not disparage liberal values and ideals. On the contrary he describes a path forward that will pave the way for a liberal American future.
If you are interested in assessing the current political landscape through the eyes of a pragmatic, honest and fact-based piece of literature, this book is for you.