Percentage of Americans who can name the three branches of government (image) Annenberg Public Policy Center of the University of Pennsylvania Share Print E-Mail Caption From the Annenberg Constitution Day Civics Survey of 1,009 U.S. adults August 4-9, 2020. The margin of error is +/- 3.6 percentage points. Credit Annenberg Public Policy Center Usage Restrictions May be used with credit to the Annenberg Public Policy Center Share Print E-Mail 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.