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Public Opinion Polling. How Public Opinion is Measured (and Mismeasured). Rise of Polling Companies. Originated with market research Gallup dissertation Early Political Polling Election forecasting Literary Digest polls
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Public Opinion Polling How Public Opinion is Measured (and Mismeasured)
Rise of Polling Companies • Originated with market research • Gallup dissertation • Early Political Polling • Election forecasting • Literary Digest polls • Correctly predicted winner of presidential elections from 1916 to 1932 • Conducted VERY large mail-in surveys (drawn from telephone and automobile ownership rolls)
Rise of the Gallup Poll • 1936 Election • Literary Digest vs. Gallup • Gallup predicted not only that he would get it right with a sample of approximately 1,500 respondents (as opposed to over 10 million), but that Literary Digest would get it wrong • Gallup used quota sampling methods and face-to-face interviews
Polling Techniques • Literary Digest to the Representative Sample • Mail-in surveys to face-to-face interviews • We can now get accurate public opinion data from as few as 1,500 respondents (under right conditions) • Polling techniques have changed as technology has advanced • Face-to-face interviews to telephone surveys • Telephone databases • Early telephone surveys to sophisticated telephone polling (automated systems)
Future Polling Techniques? • Internet polling • Today, internet polling is very unscientific • Self-Selection Bias • Impossible to get random sample of population • For that matter, any call-in TV poll is also unscientific and worthless • In order for internet polling to become a valid method for measuring public opinion, pollsters would need to find ways of generating a random sample of the population • Particularly difficult given that internet users as a whole are a specific segment of electorate/citizenry
Use of Polls in Politics:Dewey Defeats Truman • 1948 Election • Gallup predicted that Republican Thomas Dewey would defeat incumbent president Harry Truman • Gallup, Roper, Crossley stopped polling about a week before general election • Still many undecided voters
Use of Polls in Politics:Confidence in Polling Restored • Louis Harris • John Kennedy hired Harris to be his campaign pollster • Humphrey was vulnerable in West Virginia and Wisconsin • Harris was the first pollster to be employed by a president • Kennedy kept him on to gauge public approval ratings and policy preferences
Use of Polls in Politics • Johnson • Used polling data to measure public support for his domestic agenda • Especially concentrated on public opinion late in his presidency, as he was extremely concerned with perception of U.S. involvement in Vietnam. • In 1966, Johnson’s nightly reading included summarized results of a series of questions relating to public support for the war. • Nixon • In his first year in office, Nixon commissioned more private polls than Johnson commissioned during his entire presidency • Extensive polling during 1972 re-election campaign
Use of Polls in Politics • Ford • Examined strategies for maneuvering out of the political hole left by the Watergate scandal • Tried to gauge public opinion about the possibility of pardoning Nixon • Carter • Felt that public opinion was so important that he gave his pollster an office in the White House • The beginning of a much more common trend among recent presidents • Hostage crisis at end of his presidency consumed much of his time and polling attention
Use of Polls in Politics • Reagan • Met with his pollster almost monthly to monitor public support for the administration and its policies • George H.W. Bush • Kept close tallies on public opinion and reportedly relied on poll results to shape his posture with respect to Iraq. • Clinton • “Horserace presidency” • Made no secret about the role of pollsters in his White House, commissioning regular polls about every aspect of American political life (Stanley Greenburg and later from Dick Morris) • Morris – Clinton did not used polls to select his policies • Used polls to determine which actions were winning the most support and to shape public messages
Use of Polls in Politics • 2000 Election • Methods for polling today are extremely accurate • Enormous number of polling companies, even larger number of polls • Large polling companies (Gallup, etc.) • Polling alliances • On average, these polls were extremely accurate (missed by about one percentage point)