|LDS Temple, Utah, USA|
But, this is not about Romney, the candidate. This is about Romney, the Mormon.
As a voter, perhaps a traditional Christian voter, you may want to have a working knowledge of this rather strange and specifically American religious path. Here is a site that will give you a few guidelines on how to approach your Mormon friends and acquaintances. Mind you, the site is biased in favor of the Church of Jesus Christ of Latter Day Saints--The Mormons--but you will get a fairly well rounded idea of the man from Massachusetts who wants to be your president, even though the site is not actually a Romney bio.
(Please note, I am not presenting any contrary commentary or anti-Mormon websites here. If you want contrarian views on the LDS church and its aims, there are plenty of sites that will be more than willing to accommodate you.)