A finding aid to locate national US public opinion polls. iPoll provides half a million survey questions and answers asked in the US over the last 65 years by more than 150 survey organizations.

Provided by the Roper Center for Public Opinion Research at Cornell University, Roper iPoll is the largest collection of public opinion poll data with results from 1935 to the present. Roper iPoll contains nearly 800,000 questions and over 23,000 datasets from both U.S. and international polling firms. Surveys cover any number of topics including, social issues, politics, pop culture, international affairs, science, the environment, and much more. When available, results charts, demographic crosstabs and full datasets are provided for immediate download.

The Mintel database contains the following:
Mintel Reports- covers brands, companies, markets, consumers and trends. Each report combines data and analysis of the competitive landscape, market-share analysis and consumer profiles.
Mintel Market Sizes – global market data including market size, share and segmentation data.