We'll see how it goes. President Obama has done much to engender disillusionment, apathy, and cynicism among young voters. Are we trashing Sanders with a premature cynicism? I don't know.
I do know that Dr. Jill Stein has labored mightily to get the Green Party on the ballot in more and more states.
My opinion is that Hillary has been so much involved over the last 30 years in creating the world as it is today, that voting for her is a vote for more of the same. She can't even conceive of her own criminality.
Should Sanders fall, Jill Stein will still be there. In California, we need have no fear that the Democratic nominee will lose. We are thus free to vote for Dr. Jill Stein, the best presidential candidate you're likely to see in your lifetime.