American politics was transformed from the time a WABC manager told Rush Limbaugh, "You're kidding yourself if you think we'll ever carry your national show", to the day an establishment Republican senator griped "talk radio is running America". Limbaugh ignited a new generation of talkers such as Sean Hannity and Glenn Beck helping to define the Conservative movement. But Rush can't take all the credit, the story begins much earlier. It began with Walter Winchell and Bob Grant. This is the remarkable story.