2016 Dem Primary between Clinton, Biden, Sanders, and Warren

[Drew]

What if Biden and Warren had run this year, along with Clinton and Sanders?  Assume they all announce their candidacy around the same time back in Spring 2015.  Does Sanders ever gain traction with Warren in the race?  Does Biden get any love from the establishment?  

My guess is that Hillary wins the early states that she does in real life (IA, NV, SC).  Biden drops out by mid March as Hillary consolidates the establishment lane.  Meanwhile, Warren wins NH over Bernie as she runs up margins near the MA border.  Bernie also drops by the end of March as he loses the progressive lane to Warren, though he does a Kasich and wins his home state of VT.  And of course O'Malley gets around 1% in IA and drops out, and Chafee, Webb, and Lessig go nowhere fast.

The final map looks similar to the real-life map, except replace Bernie states with Warren.  Exceptions are Warren wins MA and Bernie wins VT.  Hillary also gets many of the superdelegates and wins the nomination.

Thoughts, maps?

[Kingpoleon]

My early states predictions:
Iowa: Sanders 30%, Biden 29%, Clinton 25%, Warren 15%
New Hampshire: Sanders 34%, Warren 25.7%, Biden 24.3%, Clinton 16%
South Carolina: Biden 42%, Clinton 33%, Warren 13%, Sanders 12%
Nevada: Clinton 33%, Biden 31%, Sanders 24%, Warren 12%

Warren probably drops out after winning Massachusetts, but then wins RI, one of the few later states she got on the ballot for.
Final map:

Biden 38%
Sanders 33%
Clinton 25%
Warren 3.3%
Others .7%

Biden clinches the nomination after Sanders and Clinton hold a joint press conference after every state voted.