I feel as though some people don't realize that a candidate's floor is the absolute minimum that the candidate is looking at considering facing a good opponent, etc. I don't know how one could put Oregon or Delaware or Connecticut in Sanders' floor here.
Mine:
Under what circumstances is a Republican victory in Delaware possible?
It's not usually, but Sanders' floor is inherently smaller than other Democratic candidates. Drawing his floor supposes that he runs a poor campaign and is facing a strong Republican, and if that is the case he could turn enough voters in exurban Philly, which would also be a key to winning New Jersey.
Remember that this isn't a prediction, but rather a floor, which represents a worst case scenario for an already poor GE candidate.