Nate Cohn @Nate_Cohn
Sure, there's probably some nonresponse bias. There always is! But the amount of focus on partisan nonresponse bias has gotten way, way out of hand on this website as of late https://t.co/jC61A74H97 — PolitiTweet.org
Michael H DiGenova @digenova_h
@Nate_Cohn Of course. Afghanistan represented a differential response bias.