From these initial newspaper items on Oct. 31, 1938, the apocryphal apocalypse only grew in the retelling. A curious (but predictable) phenomenon occurred: As the show receded in time and became more infamous, more and more people claimed to have heard it. As weeks, months, and years passed, the audience’s size swelled to such an extent that you might actually believe most of America was tuned to CBS that night. But that was hardly the case.
Far fewer people heard the broadcast—and fewer still panicked—than most people believe today. How do we know? The night the program aired, the C.E. Hooper ratings service telephoned 5,000 households for its national ratings survey. “To what program are you listening?” the service asked respondents. Only 2 percent answered a radio “play” or “the Orson Welles program,” or something similar indicating CBS. None said a “news broadcast,” according to a summary published in Broadcasting. In other words, 98 percent of those surveyed were listening to something else, or nothing at all, on Oct. 30, 1938. This miniscule rating is not surprising. Welles’ program was scheduled against one of the most popular national programs at the time—ventriloquist Edgar Bergen’s Chase and Sanborn Hour, a comedy-variety show.
The new PBS documentary allows that, “of the tens of millions of Americans listening to their radios that Sunday evening, few were tuned to the War of the Worlds” when it began, due to Bergen’s popularity. But the documentary’s script goes on to claim that “millions of listeners began twirling the dial” when the opening comedy routine on the Chase and Sanborn Hour gave way to a musical interlude. “Just at that moment thousands, hundreds, we don't how many listeners, started to dial-surf, where they landed on the Mercury Theatre on the Air,” explained Radiolab this weekend. No scholar, however, has ever isolated or extrapolated an actual number of dial twirlers. The data collected was simply not specific enough for us to know how many listeners might have switched over to Welles—just as we can’t estimate how many people turned their radios off, or switched from Mercury Theatre on the Air over to NBC’s Chase and Sanborn Hour either. (Radiolab played the Chase and Sanborn Hour’s musical interlude for its audience, as if the song itself constituted evidence that people of course switched to Welles’ broadcast.)
Both American Experience and Radiolab also omit the salient fact that several important CBS affiliates (including Boston’s WEEI) pre-empted Welles’ broadcast in favor of local commercial programming, further shrinking its audience. CBS commissioned a nationwide survey the day after the broadcast, and network executives were relieved to discover just how few people actually tuned in. “In the first place, most people didn’t hear it,” CBS’s Frank Stanton recalled later. “But those who did hear it, looked at it is as a prank and accepted it that way.”