Public Policy Polling (PPP) is a Democratic polling firm with a good track record (Nate Silver's FiveThirtyEight gives it a B+ rating) and an idiosyncratic sense of humor, and Rachel Maddow had some new results she was excited to share on Monday night's Rachel Maddow Show. "I can now report, this year's Republican presidential nominee is less popular than middle seats on airplanes," she said, and she meant it literally.