Bloomberg polling has Obama 13 points ahead of Romney.

"Can that possibly be true?"

The firm that conducted the Bloomberg survey, Selzer & Co., is well regarded by polling experts. The margin of error for its likely voter results was 3.6 percentage points.

The poll did not include an over-representation of Democrats, or African-Americans – both groups that skew heavily toward the incumbent. One thing that might account for its result, as compared with other surveys, is that it shows Obama doing better among white voters. The Bloomberg survey has him with 43 percent of the white vote, as opposed to 50 percent for Romney.