Gallup poll
The results of scientific polls might not be accurate if the people being polled are aware of the agenda of the poll. A poll also might not be accurate if a large enough group of diverse people are not included in the poll.
the poll tax meant fewer black people could vote
The poll tax meant fewer black people could vote
A poll conducted by a reputable polling organization with a large sample size, a diverse participant pool, and a clear methodology is most likely to be accurate. Look for polls that adhere to best practices in survey methodology and have a track record of accurately predicting outcomes.
It's obviously not completely accurate. But the more people you include the more accurate it gets. Statisticians choose the sample size to be large enough for a fairly accurate representation.
TIPP was the most accurate in the 2004 election. Gallup is best-known brand, but this time around they are covering their bases by producing several polls that yield different results, which seems pretty useless. Rasmussen also has a good reputation.
election, interest groups, the media, and personal contacts with the public are features of an accurate measurement of public opinion
The literary digest only polled its readers and its readers were not a random sample. Only people who liked to read and had money to spend on books took the literary digest. Thus their poll was biased and did not give an accurate result.
No, I don't think so. Unless an accurate poll is taken, no-one can answer this question.
A push poll is a biased question. A straw poll is an informal poll. An exit poll is taken on election day.
A. Straw poll A. Informal poll B. Push poll B. Technique for spreading negative information C. Exit poll C. Poll taken at voting place