CBS will cover it up for him and won't release it. But if it were a Republican president, they would be tripping over each other at CBS to release it so fast.
You might find a more accurate number if you look at all the polls combined. http://www.realclearpolitics.com/epolls/other/president_obama_job_approval-1044.html Obama hasn't broken his lows from September but he sure is close.
Whenever Obamas poll numbers start to drop the birther issue starts to get major airtime.Just an observation