If you're looking for public opinion data that may be cited in news magazines, newspapers, or academic journal article, these general databases are a good place to start searching since they include all of these types of sources.
Provides access to thousands of full-text scholarly journals, trade and professional titles, newspapers, magazines, dissertations, working papers, case studies, and market reports. Content covers all major subject areas, including business, health and medical, social sciences, arts and humanities, education, science and technology, and religion.