It’s possible that the Democratic race has been transformed, but much depends on California. The difference between Biden finishing above or below 15 percent there tomorrow is enormous and could make the difference whether Bernie establishes an insurmountable delegate lead or not.

Check out the wildly different scenarios spelled out in this Steve Kornacki thread:

I tend to think Biden is getting enough of a bounce out of South Carolina to hold down Bernie’s lead and make a real race of it going forward, but we’ll know soon enough.