Question:
Among registered voters, Obama holds a 48 percent to 42.9 percent lead when "leaners" are factored in. Among those judged as "likely registered voters," Obama's lead is 49.5 percent to 43.1 percent, with 7.4 percent undecided.

Poll Demographics

About this Poll
The Hawkeye Poll was conducted by phone Aug. 4-13. The sample size is 709 registered voters, (margin of error 3.7 percent) and 617 likely voters (margin of error 3.9 percent). Likely voters are defined as registered voters who say they are "absolutely certain" to vote. Reported results are weighted to match the sex, age and race of the registered Iowa voter population.