Nate Cohn

Nate Cohn @Nate_Cohn

@pollcat i'm not sure i'd go so far as to say that this exercise is misleading, but i do think this is making a huge and undefended assumption: that presidential vote choice is the source nonresponse bias, and not another variable correlated with presidential vote choice — PolitiTweet.org

Nate Cohn @Nate_Cohn

@pollcat well, the conclusion that error on issues < error on pres. ballot only holds if you assume that the source of nonresponse is presidential vote choice. if it's something else, it's possible that it's more highly correlated with another issue question than presidential vote — PolitiTweet.org