I'm not even going to lie, Obama has this in the bag end of story.
Obama's donations are largely small donations of like 2$, which comes from the people and makes up 46% I think or somewhere around there of his money that he uses for ads etc, and Mitt Romney only gets like 11% of his money for small donors, he has alot more large donors than Obama does though, because
Mitt Romney in the office = Another Bush
Obama in the Office = More money Spent
And Ron Paul has really no chance of winning.