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The Literary Digest poll in 1936 failed due to selection bias and high nonresponse rates. Their mailing list was drawn from sources like phone books and magazines that skewed toward middle- and upper-class voters, excluding lower-income groups. Additionally, the poll had an extremely high 76% nonresponse rate, and people who do not respond to surveys are systematically different than those who do in both obvious and subtle ways.

Author

mogijo11dffdfgdfg

Language

EN