LibGuides: Government & Politics: Pollsters, studies and government databases

They've taken a poll.

Bloomberg Politics Polling is one of many features on this site that includes commentary, news, and political analysis by the international news agency.
Gallup Gallup conducts U.S. and world polls, daily tracking and public opinion research on a wide variety of topics.
The Harris Poll Politics, business, sports and health are top topics for this polling company.
National Opinion Research Center Based at the University of Chicago, NORC is an independent research institution.
Pew Research Center Billed as nonpartisan, the Pew Research Center polls Americans on a variety of subjects. Gun ownership and control, Iran nuclear policy, immigration policy, government budgets and racial equality are recent topics of polls.
Quinnipiac University Polling Institute Based at Quinnipiac University in Connecticut, this public opinion polling center surveys public opinion in Connecticut, Florida, New York, New Jersey, Pennsylvania, Ohio, Virginia, and nationally.[2]
Rasmussen Reports This US polling company tracks elections, politics, current events and the president's job approval ratings.
Reuters Polling Polling arm of British news organization Reuters surveys people on politics and elections, social issues and current events.

They've done a study.

ClinicalTrials.gov is a registry and results database of publicly and privately supported clinical studies of human participants conducted around the world. Learn more about clinical studies and the background of this website.

How often is the minimum wage raised?

Consult the U.S. Department of Labor about the history of the Fair Labor Standards Act of 1938 and this table of minimum wage by year.