TLDR warning
I talked to a lot of family members and friends who claimed they were going to sit out this election after Obama's gay marriage decision. But as Romney and his camp started crucifying Obama while gutting voter rights I saw VERY homophobic black people fall back in line. These folks have disappointments and disagreements with the president but came to his aide because they saw their champion being spit on and insulted.
My mom didn't like Bush politically but liked that he was a strong Christian, and loved his Texan charm which reminded her of our southern family members; she was rather indifferent about McCain. My mom is homophobic but I cannot call her intolerant - she treats all people with respect, supports gay marriage, and I don't believe she is someone who naturally hates people. But she hates Romney. Not as in really dislikes: she hates him and everything he stands for. She can't stand Anne Romney either. And it boils down to not just him being an entitled asshole, but the way he belittled and insulted the president. She literally believes Romney is racist due to his Mormon faith. I know for a fact that many older black people feel the exact same way that she does. And most of them showed up to vote.
I just wish my grandparents had lived longer, not just to still be here but to see him get re-elected. My granddad served in WWII and said when his company was told FDR had died, they all not only cried but wound up bonding with their white higher officers, who were crying as well. My grandmothers had pictures of JFK, Jesus, and MLK in their homes (my grandma on my mom's side used to say she met JFK and MLK in person, and couldn't wait to meet them again plus Jesus in the future). And naturally they loved Obama, voted for him, and spent a lot of time just cherishing the idea of his family being in the White House, being excited about the health care bill being passed (which benefited them), etc. Personally I'm more jaded and not the biggest Obama fan but there's no doubt his mere existence is important