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Defend Earth from alien invaders
what the public thinks about a particular issue or set of issues at any point in time
public opinion polls
interviews or surveys with samples of citizens that are used to estimate the feelings and beliefs of the entire population
unscientific surveys used to gauge public opinion on a variety of issues and policies
a method of poll selection that gives each person in a group the same chance of being selected
a variation of random sampling; census data are used to divide the country into four sampling regions. sets of countries and standard metropolitan statistical areas are then randomly selected in proportion to the total national population.
polls taken for the purpose of providing information on an opponent that would lead respondents to vote against that candidate.
continuous surveys that enable a campaign to chart its daily rise or fall in support.
polls conducted at selected polling places on election day.
sampling error/margin of error
a measure of the accuracy of a public opinion poll
the coherent set of values and beliefs about the purpose and scope of government held by groups and individuals
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