Is Mormonism a Christian religion similar to Methodism or Presbyterianism?

As we face the fact that two Republican candidates are Mormons, it is time for people to get serious and discover what Mormons believe and determine if these beliefs make them just another branch of the Christian faith or something so bizarre, so outrageous, so aberrant when compared to the Orthodox Christian faith that it is time to take a close look at Romney and Huntsman.