(Courtesy photo via Amazon.com)

"Why the Right Went Wrong: Conservatism- From Goldwater to the Tea Pary and Beyond" by E.J. Dionne Jr.

The already lengthy presidential campaign has included notable battles on the Republican side with the candidates trying to claim the mantle of conservatism.

What is a true conservative? How much does it really matter to voters who aren’t purists about the issue? In his new book, "Why the Right Went Wrong: Conservatism- From Goldwater to the Tea Party and Beyond," journalist and NPR commentator E.J. Dionne explores the topic.