I dunno; "really stupid" is the first thing that always comes to this mind, when thinking of the primitives' 0bamessiah.
I recall seeing him on television during the 2004 Democrat National Convention--I of course didn't hear a word he said, but watched his body language--and it struck me that he was some sort of puppet for a greater intelligence that was pulling his strings, but no matter how he was manipulated, he came across as being not very bright.
I dunno who the "greater intelligence" would be; maybe Bill "25,000,000 dead" Ayers, maybe cocaine, maybe Moochelle, maybe the professional Democrats, maybe collective white liberal guilt--but it's some sort of person or force that moves him, uses him.
I suspect he's lower than the median IQ.