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Home » Discuss » Topic Forums » Election Reform Donate to DU
Febble Donating Member (1000+ posts) Send PM | Profile | Ignore Tue May-24-05 02:12 AM
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5. try
the ratio between Kerry response rate (Kerry responses/Kerry votes) and Bush response rate (Bush responses/Bush votes). Then take the arctangent of the ratio and subtract the arctangent of 1.

You should end up with a measure of the amount by which the poll differs from the count, where 0 is no difference, negative is an under-count of Bush votes (or over-sampling of Bush voters) and positive is an undercount of Kerry votes (or an under-sampling of Bush voters). OTOH suggested the arctan, and it works brilliantly.
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