Elizabeth Warren is fierce, I believe she would've been a strong contender in terms of competence. But I'd be surprised if Bernie didn't have a stronger base and of the two would seem as the less controversial choice.
Personally, I would've loved to see a Warren / Sanders ticket. I'd be surprised if Trump / Pence could've held a candle to that in Wisconsin, Michigan, Pennsylvania, Ohio. Maybe Florida would've swung the other way as well then, although who the hell can tell? I swear that state is like a different planet. (Not necessarily a bad thing.)
Personally, I would've loved to see a Warren / Sanders ticket. I'd be surprised if Trump / Pence could've held a candle to that in Wisconsin, Michigan, Pennsylvania, Ohio. Maybe Florida would've swung the other way as well then, although who the hell can tell? I swear that state is like a different planet. (Not necessarily a bad thing.)