I rather doubt even the democrats would run two ultra-lefty Massachusetts liberals on the same ticket. I think the way is being paved for another minority (think Hispanic like Julian Castro) for many of the same benefits Obama enjoyed such as no serious criticism allowed. They probably figure a hispanic will be a shoo-in with all the illegals being allowed in.
But first there's this old hag standing in the way...
Can’t have P and VP from same state anyway.