Bottom line: In the popular vote, Obama will win over Romney by a surprisingly small margin, if he wins.
People generally think Obama is going to win, as per this graphic:
But the actual "I'm voting for X" numbers are 50% Obama, 47% Romney. That is within the margin of error.
The poll, which is here, indicates that while the numbers are close, Obama's support is slightly (but only slightly) more enthusiastic than Romney's. Obama has a good approval number compared to Romney's but for some reason people, who are apparently all idiots, think that Romney will do a better job than Obama at handling the economy, even though a strong majority accredit Obama with understanding the economic problems the country is having.
"but for some reason people, who are apparently all idiots, think that Romney will do a better job than Obama at handling the economy"
In the short term he might. I predict that if he wins, the stock market will go up, the fiscal cliff will disappear, and there will be a lot more bipartisanship, because democrats normally do consider the public good, not just kicking out the other guy. Oh and the debt will continue to go up fueled by tax cuts. In the long run it will be another small boom fueled by tax cuts and a lack of regulation, followed by a giant bust.