I would support Murphy from Ct.however candidates from small states generally do not do well as they have little exposure.
I don't have anything against Bernie or Biden, but Christ, they're just way too old. Another problem with Bernie are his bros bitching about how the nomination was stolen from him. Here's the thing: the political parties are private organizations, and they can do what they want and who they want to front the ticket. Bernie is not affiliated with a party.
My own preference is a guy with both business and government experience, John Hickenlooper. The dems need some new blood.