Thousands of Small, Constant Rallies (IMAGE) Northwestern University Caption Northwestern University computer scientists performed the first large-scale analysis of partisan use of WhatsApp from Sept. 1 to Nov. 1, leading up to the 2018 Brazilian presidential election. Credit Northwestern University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.