Roper Center for Public Opinion Research

The Roper Center for Public Opinion Research at Cornell University is the world's largest archive of public opinion polling data. The Center's archives contains nearly 25,000 datasets, polls, reports and polling ephemera from the U.S. and abroad, and offers to it's members Roper iPoll, a text-searchable database of nearly 800,000 questions and topline results from national U.S. polls, state-level U.S. polls and an expanding database of international research.