Depends in what sense they mean advance of right wing extremism. I see it in the sense of losing Senate, House, White House, courts.
Although we won't get a chance to see it but I highly doubt Bernie would lose over a thousand seats during his tenure. I highly doubt Bernie would then force Tom Perez on the party to continue the mediocrity, and I highly doubt Bernie would spawn off two of the worst Presidential candidates in the modern history (but I don't really know how much Obama can be blamed for Hillary and Biden).
That's largely because Bernie is white.

The loss of Democratic power and rise of Trump was mostly backlash against having a black president. There's not much Obama could've done about white voters feeling threatened.

I have my problems with Bernie, but we don’t need this. Not committing to supporting Bernie if he is the nominee is wack. So she would rather see Trump get a second term, before she would support Bernie? She need to go away.


