For a moment there I was sure you were describing the screenplay for the first Star Wars movie.
Yes, Rand wrote in stilted style and in "Atlas..." the characters were characatures, but since it was intended as a vehicle to lay out philosophical issues, I can forgive her, just as I forgive Lucas for the Saturday Matinee quality of the characters in "Star Wars." Both are about good and evil, and both paint them in starkly black and white terms, literally so in "Star Wars." Neither are masterpieces in a purely literary sense, but both had an immense influence on American society.
Can't find figures for Witnesses.
Left Behind claims 60 million for series.
Exactly
"Uncle Toms Cabin" is full of caricatures too.
As is "The Wandering Jew".
Etc. ad infinitum. Novels as political tracts are nothing new, and on the whole they aren't good novels.
And that's a problem, because the literary flaws of the work eventually come to overwhelm and overshadow the message she wants to convey. I think, and the responses on this thread tend to support me on this, that there are a great many people who, by about page 600 or so, come to conclude that the proper answer to "Who is John Galt?" is "Who gives a damn?" This is a case where the messenger interferes with the message so very badly as to render it indecipherable to a goodly portion of her readership, because a lot of people simply aren't willing to slog through the acres of literary muck to find the pearl hidden somewhere in the sty. And as a result, despite the commonly accepted aphorism to the contrary, this is a case where the messenger really needs shooting, and shooting with great enthusiasm, followed by an unburial so as to shoot the messenger yet again.
It's a tough gig she set up for herself - I don't think there's been a decent philosopher who was also a decent novelist since Voltaire, and Rand failed to break that streak rather spectacularly. Atlas Shrugged is living proof of the truth behind the old saw - basically, if you want to write a novel, write a novel. If, on the other hand, you want to send a message, call Western Union, because the history of attempts to do both in one shot is littered with casualties, Rand being merely one of the more recent. Influential? Certainly, but it's entirely possible to be influential without being a literary masterpiece, as Ayn so ably proves.