GOP presidential hopeful Mike Huckabee says he knows the trick to beating Sen. Hillary Clinton. It's the experience of taking on the Clinton political machine back home in Arkansas, where he was governor for more than a decade. "That means something," he tells us. "To do that as a Republican in a very Democrat state that had been dominated by their political machinery is even more significant than playing against it in the national realm," he says. The lesson of those battles: "They are never going to make the same mistake twice. They are going to be ruthless."