The fact that national polls on the Democratic side are tightening at this stage is such a kick in the balls to Sanders supporters.
Yeah. I think Sanders in most of 2015 was not thinking of realistically winning. He was more about trying to influence the policy mix of the Dem party. As a result he held back attacks on Clinton. By the time he realized the had a shot (mostly in late 2015) it was too late to go into attack mode and make it stick. All he has accomplished by going on the attack in early 2016 is to drive up Clinton's negatives which only benefits the GOP. Of course the fact that Trump and likely Cruz's negatives are even worse than the post-Sanders attacked Clinton is just a lucky break for Dems.
