This survey of 1,042 adults was conducted on Sept. 13-14. Adults 18 and older residing in the continental United States were interviewed by telephone. Telephone numbers were selected based upon a list of telephone exchanges from throughout the nation. The exchanges were selected to ensure that each region was represented in proportion to its population. To increase coverage, this land-line sample was supplemented by respondents reached through random dialing of cell phone numbers. The two samples were then combined. Results are statistically significant within plus or minus 3.0 percentage points. There are 825 registered voters. The results for this subset are statistically significant within plus or minus 3.5 percentage points. There are 317 Republicans and Republican leaning independents. The results for this subset are statistically significant within plus or minus 5.5 percentage points. The error margin increases for cross-tabulations. http://www.miamiherald.com/2011/09/20/v-fullstory/2417008/poll-finds-obama-losing-ground.html