Iowa was a must win for Sanders

[pandr32]

15. He fell far short

...and so he has ground to make up for. The thing is, how can he?
Hopefully there will not be another weak spot where the data firewall goes down--allowing him (via surrogates) to access other important state Clinton campaign data, and hopefully there will be no more "masquerading" shenanigans to try to gain access to union members or other strategically important people.
A clean campaign would be nice, yet Sanders has been getting rather urgently negative of late. No matter--more debates where Clinton shines every time (being the gem that she is) will not help Sanders, and the strategic releases of movies about Benghazi and press releases of "top secret" e-mails that weren't top secret at the time, have pretty much already done their worst for Clinton and won't make much of a dent in her very solid support.
Where would Sanders gain from, except with Republicans, but they would have to officially change party for the primaries I think.