For the 2008 Presidential poll conducted between July 31-Aug. 4, 2009. Random national sample 1002 adults. Note — all landlines. Margin of error = +/- 2.4 % for registered voters; +/-4.3 for Dems and +/-5.0 for Republicans – Barbara K Iverson

For the 2008 Presidential poll conducted between July 31-Aug. 4, 2009. Random national sample 1002 adults. Note — all landlines. Margin of error = +/- 2.4 % for registered voters; +/-4.3 for Dems and +/-5.0 for Republicans

August 10, 2008

How the AP-Ipsos poll was taken – USATODAY.com