I think the poll does not list the option that Obama will win because he has a HOF campaign team and a lot of enthusiastic volunteers.
The youth vote share was as strong as 2008. I think one factor is that a lot of teeny boppers who fell in love with Obama in 2008 but were too young to vote then are glad to be able to vote for him now.
Also, the GOP has not convinced a majority of voters that B*sh did not suck and that a new GOP President would be any different.
I also think a majority of voters know that the GOP has gone overboard in refusing to work with President Obama.
Where Ignorance is Bliss, 'Tis Folly to be Wise.