Sen. Rand Paul, R-Ky., center, meets with members of the Londonderry Fish and Game Club in Litchfield, N.H., on Jan. 14. Paul was one of three GOP presidential hopefuls who attended Sunday's semiannual gathering of David and Charles Koch's donor network in California. Jim Cole/AP hide caption

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Former Arkansas Gov. Mike Huckabee was a Republican presidential hopeful in the 2008 election. He writes that he wants his book God, Guns, Grits, and Gravy to introduce Americans to life in "flyover country." Justin Sullivan/AFP/Getty Images hide caption

itoggle caption Justin Sullivan/AFP/Getty Images