NEW POLLS out in vulnerable House districts: Democratic candidates ahead in 12 of 14 races. Average is 8%pt overperformance for Democrats (roughly in line with generic ballot). I collected the data here: https://t.co/2GgXsWUzZT pic.twitter.com/MWIWUbYyIE

— G. Elliott Morris (@gelliottmorris) February 21, 2018