Roper iPoll This link opens in a new windowiPOLL is a comprehensive, up-to-date source for US nationwide public opinion. A full-text retrieval system, the iPoll online database is organized at the question level, providing the tools to sift through questions asked on national public opinion surveys from 1935 to the present. Surveys archived in the Roper Catalog were originally gathered by academic, commercial and media survey organizations such as Gallup Organization, Harris Interactive, Pew Research Associates, etcetera. Includes access to study documentation, questionnaires, codebooks, and datasets.