Here is what @coralway's linked article said regarding the poll, Billiethkid: The poll results are based on a survey by 1,026 adults around the country between Aug. 1 and Aug. 5. There is a plus or minus 4 percentage point margin of sampling error for the full poll.


But, this:Overall, do you have a favorable or unfavorable impression of Barack Obama? - The Washington Post is what I think you are actually looking for which wasn't in the HuffPo piece. Notice the response numbers when WaPo breaks it down to registered voters. Overall, do you have a favorable or unfavorable impression of Mitt Romney? - The Washington Post

EDIT: I don't see any place where the pollsters at WaPo describe the demographics of those 1,026 polled.