Rasmussen Reports conducted five state telephone surveys in partnership with Fox News Channel on September 21, 2008. The surveys were conducted in Florida, Michigan, Ohio, Pennsylvania, and Virginia. A total of 500 Likely Voters were interviewed in each state using the Rasmussen Reports automated telephone survey methodology (see www.RasmussenReports.com for details).

The margin of sampling error for the full sample in each state poll is +/- 4.5 percentage points with a 95% level of confidence. Caution should be used in interpreting subsets of the data as such results will have an even larger margin of sampling error. It is anticipated that larger sample sizes will be used later in the election season which will allow for a more detailed examination of demographic distinctions.

In four of the five states-Florida, Ohio, Pennsylvania, and Virginia-Rasmussen Reports had conducted similar surveys on both September 7 and September 14.