Mormonism is a false religion which is based on salvation by works and righteousness. In real Christianity, salvation is a free gift, and works and righteousness are result of the grace that God gives to the believer.
Many years ago, when I was an undergraduate, a group of my friends tried to witness to some Mormon missionaries. We got into some really deep discussions with them over a period of several weeks. As time went on, other Mormons came along besides the two missionaries. They were obviously higher-ups in the church. But some other guy who came with Mormons named Jeff didn't talk much and didn't wear a white shirt or tie and didn't have a name tag on. At the end of one of our sessions, we shook hands with the Mormons as usual. But this time when Jeff shook my friend's hand, he slipped my friend a note. The note said "help me" and asked us to meet with him at a particular place and time. After they left, my friend read the note to us. Then we all prayed. I prayed like I had never prayed before.
We met with Jeff. He explained that he was not really in trouble, but wanted to warn us that Mormonism is a false religion. He explained that he had joined the Mormon Church only because he had dated some Mormon girl. But the girl had dumped him and he had since found Christ (the real Christ). He had decided to stay in the Mormon Church so that he could thwart the efforts of the missionaries. He bought a large number of copies of a book, an exposé of Mormonism called "The God Makers". He would put a copy of this book in the mailboxes of the potential converts targeted by the missionaries. But being college students, we didn't have accessible mailboxes so he contacted us with the note instead. He told us that he had decided to quit going along with the missionaries and to leave the Mormon Church because it was dishonest to deceive them into thinking that he was a sincere Mormon.
As the video indicates, Mormonism is riddled with contradictions. In first three chapters of the book of Jacob (one of the books in the book of Mormon) it specifically states that David sinned when he married more than one wife. But the 132nd chapter of Doctrine and Covenants (another book considered to be scripture according to the Mormon Church), it specifically says that David did nothing wrong when he married more than one wife. Mormons are liars. Mormon political candidates lie and say that they are pro-life with no exceptions (if it is politically expedient for them to do so), but then they take the position of the Mormon Church (which is that abortion is acceptable in cases of rape, incest or certain birth defects). I will never knowingly vote for a Mormon candidate for any office. Anyone who voted for Mitt Romney should repent. The Bible says not to be "unequally yoked with an unbelievers" and to "come out from them and be separate, and touch not the unclean thing" for "what fellowship can Christ have with Belial?" To the best of my ability, I will only vote for real Christians.
Hat tip to the Seppi blog for posting the video at the beginning of this post.