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Stratified sampling
random sampling of people in a subpopulation to gather data on that specific group (age, race, religion, etc)
Quota sampling
that are found in a non-probable way that relies on the non-random selection; uses a predetermined number or proportion within each subgroup
Uses of public opinion polling
elected officials use it to shape policies based on what citizens want,
others use it to measure Americans' viewpoints
Push poll
'fake' polls, meant to damage another candidate's chances by suggesting a hurtful idea about them (Ex: "If you knew that Candidate Smith was being investigated for corruption, would you be more likely to vote for him or less likely?")
Margin of error
+ or - % points that show inherent accuracy of polling (-3.00 to +3.00 and can never be 0)
24th amendment
prohibits both Congress and the states from conditioning the right to vote in federal elections on payment of a poll tax or other types of tax