Elizabeth Warren’s seemingly inexorable rise and Joe Biden’s dogged resilience have been the two major stories of the Democratic primary so far.
Over the next and more intense period of campaigning in the early states, the story could be very different. The two will probably have to confront their vulnerabilities to a greater extent than they have to this point, and they face challengers who are well positioned to exploit them. CONT.
Nate Cohn, New York Times