IPOLL, from the Roper Center for Public Opinion Research, is a full text database of 500,000 questions from national public opinion surveys since 1935 and updated daily. iPOLL includes survey results data from academic, commercial and media survey organizations such as Gallup, Harris Interactive, Pew Research Associates, ABC, CBS, Wall Street Journal and many more. Many data sets are available for download in ASCII or SPSS format.
Contains more than 37,000 annual time series of quantitative historical information covering virtually every quantifiable dimension of American history: population, work and welfare, economic structure and performance, governance, and international relations, all from the earliest times to the present. A compendium of statistics from over 1000 sources last updated in 1990, HSUS has been expanded to include data series and topics such as slavery, American Indians, health, crime, migration, poverty, and the Confederate States of America are each placed in historical context.