Roper Center Public Opinion Archives (with iPOLL)
Provides over 10,000 US and 8,000 international surveys and includes access to iPOLL, a comprehensive database of nearly 500,000 questions in the US over the last 70 years. It also offers on demand access to the full datasets required to conduct bivariate and multivariate analyses on surveys archived here using RoperExpress. This permits the full range of data analysis using statistical programs. Sign in is required to download data sets.