The campaigns by Mitt Romney and Jon Huntsman Jr. for the Republican presidential nomination, along with the popular and profane Broadway musical "The Book of Mormon," are putting Mormons in the public eye. But common caricatures — not to mention some of the Church of Jesus Christ of Latter-day Saints' public relations efforts — create confusion about this 14 million-strong religion.

So let's unpack some misunderstandings about how this faith can engage the world, whether on a mission or in the White House.

1. Mormons practice polygamy.