Already there has been a loud chorus of voices telling all Clinton supporters to hold their noses and vote for Obama. No matter how objectionable we may find him, we must do as we are told.
The problem with this approach is that every time we submit to this, it gets worse. It's like making it the customer's responsibility to buy a Ford, instead of making it Ford's responsibility to build a better car.
Compare the mess that is today's Democratic party with how organized and efficient Republicans can be. This is inevitably what protectionism gives those who indulge in it: the competition keeps getting better, while the protected party stays stuck in the past.
The primary reason the Democratic party is in disarray today is the one-way flow of communication. Massachusetts talks to Ohio but never the other way around. The very idea of caring about what Pennsylvania might think is treated as pandering. The party isn't interested in feedback. Their reality hasn't been updating regularly, but they don't even appear to be aware that they're operating with outdated information.
Everything bad that happens this election cycle is happening because the Democrats have been allowed to get away with blaming the voters when the party does not win.