Roper Center for Public Opinion ResearchThis site includes sources in opinion polling such as Gallup, Harris, Roper; ABC, CBS, CNN and NBC; Los Angeles Times, New York Times, USA Today and the Wall Street Journal. The database is maintained by the Roper Center, a non-profit education and research organization in the field of public opinion, polls and public policy. To link to the Roper Center iPOLL site go to the iPOLL login page and enter your e-mail address. On your first login, you'll be asked to register. After your first visit, your e-mail address acts as your login. Using iPOLL from the Roper Center site requires that you use the site directly from a Cornell IP address on the Ithaca campus.