Not this Chicagoan!
You are hearing the voice of the base support of the stain and his regime. Given that dem/lib/prog/pops engage in "voter fraud" as easily as breathing, this "unscientific" number is probably more like 25%.
Of course, that would mean that - even in Communist Chicago - 75% of the good folks believe that Mrs. Palin's book should be offered for sale to purchasers.
And that is sayin' a bunch for Communist Chicago!