John Sides finds evidence that Romney's campaign has increased interest in Mormonism:
The bottom line is that politics plays a pedagogic function. It is sometimes quipped that foreign policy crises cause Americans to become acquainted with world geography. In much the same vein, the nomination of a presidential candidate with a Mormon religious background has prompted vast numbers of Americans to seek out information about this religion and its adherents.
Update from a reader:
"The Book of Mormon" opened on Broadway in March 2011.
The Dish 
