How the AP-GfK poll on Obama was conducted

The Associated Press-GfK Poll on President Obama, the direction of the country and health care was conducted by GfK Roper Public Affairs & Media from March 3-8. It is based on landline and cell phone telephone interviews with a nationally representative random sample of 1,002 adults. Interviews were conducted with 702 respondents on landline telephones and 300 on cellular phones.

Digits in the phone numbers dialed were generated randomly to reach households with unlisted and listed landline and cell phone numbers.

Interviews were conducted in both English and Spanish.

As is done routinely in surveys, results were weighted, or adjusted, to …