David,
It just looks like to me that the ones surveyed are the ones who don't pay for caller id. Ironically, THE BIBLE BELT is the most religious area. Duh.
Guns don't kill people, angry people who pull the trigger do, Atheist or Christian.
Survey Methods
Results are based on telephone interviews with 355,334 national adults, aged 18 and older, conducted in 2008 as part of Gallup Poll Daily tracking. For results based on the total sample of national adults, one can say with 95% confidence that the maximum margin of sampling error is ±1 percentage points.
The margin of sampling error for most states is ±1 percentage point, but is as high as ±4 percentage points for the District of Columbia, Wyoming, and North Dakota.
Interviews are conducted with respondents on land-line telephones (for respondents with a land-line telephone) and cellular phones (for respondents who are cell-phone only).
In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of public opinion polls.