Rasmussen says yes, 43-41. Excerpt:
Interestingly, all of the income demos give narrow splits. Obama wins the under-$20K by only six points despite his recent class-warfare schtick, 39/45. Cain wins every other income demo by six or fewer points, including a narrow 46/44 in the $100K+ demo. Just as curiously, Obama only beats Cain among union households by a seven-point plurality (44/37), while Cain wins non-union households by an even narrower margin of 44/41. Obama beats Cain among those who reject Tea Party affiliation, but only by fifteen points, 34/49. Those who embrace the Tea Party support Cain head to head by 86/7, not surprisingly, while those who are not sure support Cain by 21 points, 48/27.
I say sounds good, just dump this 9-9-9 crap and you got my vote, Mr. Cain.