The basic premise here is correct: if one of these two were to drop out and back the other, it would make the person remaining the prohibitive favorite to win the nomination, over Biden, over everyone.
But the main problem with this scenario is that it has to happen
before all of the southern primaries. If the black vote comes out as strong for Biden as I suspect it will, starting in South Carolina (yes
@Alex P Keaton, I’m beating that dead horse again) then by the time the southern states are done it will be too late because Biden will have accumulated too big a lead.
And the fact is I don’t see it happening anytime soon. Warren is doing well in the polls. You just posted the Nevada poll which is good for Bernie. So neither one sees any need to bow out now. They’ll hang in there and divide the progressive vote, and by the time one decides to quit it will be too late.