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Thought this is interesting.

http://www.washingtonpost.com/opinions/robert-j-samuelson-po...

Among pollsters, there’s fear that changing technology (mainly cellphones) and growing public unwillingness to do interviews are undermining telephone surveys — and that there’s no accurate replacement in sight. A recent study by the Pew Research Center reported its response rate at 9 percent, down from 36 percent in 1997. Put differently: in 1997, Pew made about three residential calls to get one response; now it makes 10.

Cellphones pose problems because people who use them exclusively — people who don’t have landline phones — are younger, poorer and more Democratic than the general population. By late 2011, 32 percent of Americans 18 and over had only a cellphone, up from 16 percent in early 2008. Among those 25 to 29, the share was 60 percent. Under-surveying these people could distort polls. Many pollsters, though not all, now canvass cellphones. But this is increasingly expensive. By present trends, half of Americans could be exclusive cellphone users by the 2016 election.

All this threatens the largest upheaval in polling since the 1930s.
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Don't forget the ObamaPhones!
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Quoted: Among pollsters, there’s fear that changing technology (mainly cellphones) and growing public unwillingness to do interviews are undermining telephone surveys — and that there’s no accurate replacement in sight.

How 'bout the only poll that matters--November 6.
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