I think he should ignore Warren. Lots of Sanders supporters love her and if he wants the crossover vote, targeting her will undermine that.
The Sanders supporters will split their votes. I mean, if your rationale was applied evenly, and the ticket was Hillary/Sanders, it would read "I think he should ignore Hillary. Lots of Sanders supporters love her and if he wants the crossover vote, targeting her will undermine that." The approach he is taking is the right one, target each one as an individual. The chips fall where they fall.
“...ignore Warren... crossover vote ...undermine that...”
No way. That plan is the epitome of the loser RINO/GOPe weak and perpetually losing strategy. It is a beta weak male metrosexual approach that is OVER and DONE.
It is completely outdated now with Trump leading the charge and the reason Scott Brown lost. Even Sanders’ supporters who love Lieawatha will at some level realize the Fauxcahontas label has a ring to it because the label has a basis in truth.
Ignoring Warren is the same-old-same-old and perhaps this reflects a concern troll.