The ABC News/Washington Post poll is one of just six public opinion surveys to be awarded an A+ rating for methodology and accuracy by FiveThirtyEight this week, out of 430 surveys the polling analysis website reviewed. It’s a three-peat for the ABC/Post poll, produced for ABC by Langer Research Associates: We previously received A+ grades from FiveThirtyEight in 2016 and 2018 alike.