As I noted here just two weeks ago, 80% of the delegates needed to win the Democratic nomination [i.e. 40% of the total] will have been chosen by the time March 4, 2020 dawns. The big prizes are of course California and Texas [with the other big prize, New York, not scheduled until April 23rd], but tucked in there on March 3rd with the jumbo states is l'il ole North Carolina, so it looks as though those of us down here will have a slightly disproportionately larger shot at making a difference.
Because California and Texas are so expensive to campaign in, candidates like Bernie with an established money machine will have an especially good chance.
This time around, the unpledged superdelegates do not get to vote at the convention until the second round. Unless something crushing surfaces about her, Harris looks to make it past March 3rd, along with Bernie, probably Elizabeth Warren, and maybe [but maybe not] Biden. Booker? Klobuchar? Who knows.
It will be interesting.