Remember that paper we wrote, The mythical swing voter? About shifts in the polls being explainable by differential nonresponse? Mark Palko beat us to this idea, by 4 years.

So. The other day I came across a link by Palko to this post from 2012, where he wrote: Pollsters had long tracked campaigns by calling random samples of potential voters. As campaign became more drawn out and journalistic focus shifted to the horse race aspects of election, these phone polls proliferated. At the same …