
Nate Silver @NateSilver538
I think there are basically 3 groups of polls that herd. 1) Some (certainly not most or all) online or IVR polls with crappy raw data seem to look to live-caller polls for guidance. They tend to stay pretty close to the averages throughout the year. — PolitiTweet.org
Kostya Medvedovsky @kmedved
Q. for @NateSilver538 - what exactly is the motivation behind pollster herding? I get it keeps your poll from 'look… https://t.co/QbD3ggkFPi