Gallup collects a wide range of survey data from 160 countries informing the public sector with four key aims: 1) inform public policy, 2) measure human development, 3) establish leadership, and 4) transforming organisations.
Nielsen is a global measurement and data analytics company that provides the most complete and trusted view of consumers and markets worldwide. Nielsen has operations in over 100 countries.
Pew Research Center is a non-partisan fact tank that informs the public about the issues, attitudes, and trends shaping the world. We conduct public opinion polling, demographic research, content analysis, and other data-driven social science research.