hampshire and then they go nevada, south carolina in the first four contests are about the field. changing the field. the national polls change overnight. the winner rockets off. the loser is in trouble. this is the challenge for joe biden. this is why we ask if he is a fragile front runner. check out the latest polling we have the cbs gov have in iowa. biden is leading right now. his margin just three points. single digit deficit there down to elizabeth warren. you have three candidates popping in the double digits. think of the electricity in iowa more activists, more liberal. the types of candidates who have done well there before. sanders warren can pose a challenge. there in iowa. think about that. if a warren or a sanders knocked off biden in iowa, normally the winner gets the bounce, i say. normally the loser has issues there in the polling. think about that eight-day gap and what comes next, new hampshire. who are next door neighbors? elizabeth warren. massachusetts senator. boston media market. southern new hampshire.