David Axelrod @davidaxelrod
Interesting to recall 2007-8 Iowa caucuses. Lead shifted around among top tier during the course of the race. Lower tier never penetrated. Yesterday’s Iowa Poll showed definite tiering. Will the same pattern hold or can others now at 0-2% break thru? https://t.co/1BGZ9JJVWF — PolitiTweet.org
