Brian Rosenwald, the author of "Talk Radio's America," analyzes the influence of right-wing media echo chambers on the off-year elections and talks more broadly about the impact of media on voting patterns. Rosenwald also discusses some of the factors that make right-wing radio popular: hosts frame the world into good guys and villains, creating narratives that are like "pro-wrestling, a soap opera for men." He also argues there is no equivalent media ecosystem for a liberal audience.

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