Whether a member of the House or Senate, Jim DeMint was known as one of the most conservative lawmakers on Capitol Hill. But what does it mean to be conservative? That's what DeMint and colleague Rachel Bovard address in their new book "Conservative: What to Keep."

In an interview with Greg Corombos, DeMint explains that conservative means keeping what works best for people.

"It's keeping our covenants, keeping our faith. It's keeping our differences, keeping our republic, which is the decentralized idea that our founders. (It also means) keeping our traditions and keeping our land of opportunities which is all about free market economics," said DeMint.

Listen to the first part of the conversation in the this podcast as DeMint also discusses why progressives see religion as a threat to their political agenda, how politics is becoming a religion to many, and how to defend capitalism at a time when it is constantly labeled a system of greed and selfishness.