"Those who responded to the March 18-21 survey were screened to ensure they were 21 or older and had made an Internet bet within the past year.
Because it's what's known as a "convenience sample" of a specific group, there's no reported error margin as there would be in a random survey of the general public."
That is an interesting article. One problem is that the sample is restricted to those that read CNN.com and responded to their poll. So it isn't really meaningful. I just can't understand why Congress is thumbing its nose at all that tax revenue.
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