In an ongoing series congressional correspondent Kelsey Snell looks under the hood at campaigns. From how they raise money to what they do once they have it.This episode, Kelsey looks at polling. But not the kind you expect. Kelsey talks to two of the top pollsters on both sides of the aisle about who exactly they poll, what they ask them, and how the answers change how a campaign operates.This episode: campaign correspondent Asma Khalid and congressional correspondent Kelsey SnellConnect: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.