Hillary Aides Worried about Possible Biden Candidacy

[Mehmentum]

While Biden might be bad for Hillary, I don't think Sanders fans should rejoice (unless the only reason they're supporting Sanders is because they hate Hillary).  If Biden enters, suddenly a lot of the media focus is off Sanders as Hillary's main challenger. 

Additionally, I think Biden will compete more with Sanders than is immediately obvious.  Bernie Sanders is going to need to win the vast majority of Obama's supporters (or else win some of Clinton's 2008 supporters) and Biden, as Obama's VP, will be seen as Obama's successor by some.

Sure, many of these Obama 2008 voters are currently supporting for Clinton, but that doesn't change the fact that Sanders needs them too. 

Also, Sanders' best (and probably only chance) of victory is if Clinton begins imploding due to some major (as of yet undiscovered) scandal, or is otherwise unable to run.  Without Biden, this scenario leaves Sanders essentially unopposed.  With Biden, the vast majority of Clinton's supporters will switch over to him.