Because Obama is a democrat and he supports welfare. If you look at the states that have high welfare rates, majority of the state voted for Obama. Also some people dont really understand Mormons. They dont really know their beliefs. And he was a big business kinda guy.
His platform was based on an unpopular ideology. He was insincere and his disingenuity act didn't fool most of the voters. He was inept, and his loyalties clearly were with the money backing him and NOT the American voters. His entire campaign was based on dishonesty about Obama. He kept his would be constituents in the dark about what precisely were his plans if any. The few times he actually said something they were lies. Aside from that he probably would have won the election. I wonder if the day after the election he asked himself maybe if he had just been honest about his plans maybe just maybe he would have gotten more votes.
Romney lost because Obama, Biden, and the mainstream media painted a picture of Romney being an evil, rich man that hates the poor and women. They claimed he was just like Bush. The media didn't tell you how he donated all of his inheritance to charity and worked his last term of governor without the pay. They also didn't tell us about all of his charity work as well as helping families with medical bills and so on. They scared everyone into thinking he didn't care about the poor and elderly. Obama is painted as this great guy who cares about the middle and low class. The number of people on food stamps and welfare are at record highs and has risen at record highs. He is perfect for all the parasitic moochers who don't want to earn things for themselves. He was also great at pitting everybody against the wealthy and blaming Bush for 4 years. People are mesmerized by him. They look at him like a cool celebrity and one of us. Just my opinions there. I'm sure people will be all over me. But whatever.
Mitt lost the election because of racism and class division. The 47%ers voted as a group and Obama used this to divide the nation; those that believe and self reliance and work and those that believe in victimization.