FRONTLINE explores the phenomenon of conservative talk show host Rush Limbaugh. Three hours each day, five days a week, Limbaugh is heard on more than 600 radio stations, in addition to hosting a daily half-hour television program. How much political clout does Limbaugh have? Tracing his rise to fame and fortune, the program also takes an in-depth look at Limbaugh's audience and asks what impact he had on the Republican congressional landslide.