1) The field doubled in size.
2) Almost everyone was hurt by that in polling and fundraising.
3) Everyone but Harris/Warren have dropped in polls; only 5 of 24 candidates have major fundraising.
4) O'Rourke is no different from the rest of the field.
(1) Will Castro, Booker, Klobuchar or O'Rourke find a way to break out as Warren and Harris did?
(2) Can Biden, Sanders, and Buttigieg re-energize their campaigns?
(3) How quickly does the bottom 15 of the field winnow down, and when?