A random sample is a selection from the population of interest where each item (persons, households, widgets, etc.) has an equal chance of being selected. The idea being that measuring a random sample of sufficient size will accurately (within a margin of error) reflect the "true" value that exists in the population - while at the same time reducing your study to a manageable size.
A random sample is integral in good survey design to reduce bias in your experiment.
The extension of voting rights to all white males.
A statement that best describes opinion leaders is they stand for what they believe. In addition, they tend to affect public opinion more than leaders that aren't opinionated.
group members have developed a special trust
Overseas Absentee Voting Act happened in 2003.
Public funds for presidential campaigns