Joe Biden is doing well in the polls: in traditional Democratic strongholds, in swing states, and even in historically Republican bastions. But Democratic strategists and voters both feel worried that there is something the polls are missing.This episode: campaign correspondent Scott Detrow, campaign correspondent Asma Khalid, senior political editor Domenico Montanaro.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.org.Join the NPR Politics Podcast Facebook Group.Listen to our playlist The NPR Politics Daily Workout.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.