No I think it's a near certainty that Biden has got the nomination now.
The others all dropping out and endorsing Biden before Super Tuesday made the difference.
I think this plays well into Trump's hands. Biden is the easiest opponent for him because he can use the same model that worked against Hilary:
- "Establishment swamp" - Biden has had the same establishment forces rallying behind him that Hilary had to ensure that he got the nomination. Neither really had a groundswell grass roots movement.
- "Corruption" - Hunter Biden will be the "Hilary's emails" of the campaign.
Hilary was at least a confident debater. Biden is a bumbler who will look weak in comparison to Trump. He also possesses some of Trump's unpleasant characteristics (arrogant, smug, sexist, rude) without going all out and owning it like Trump does.
However it's not in the bag for Trump because coronavirus and the likely economic impacts will remove Trump's ace in the pack about "booming economy" and also expose him as a weak leader, if it hits the US medical system hard and he is seen to be ineffective in dealing with it and instead using the crisis to just blame others. It's easy for people to rally behind Trump's attacks on others when people aren't experiencing the effects themselves, but coronavirus impacts are going to hit his base too.
Trump doesn't have a broad coalition of voters, his strategy is on holding his base firm and making sure the electoral college holds for him, so he's vulnerable to a small degradation of that base. Biden has a chance of beating him no matter how unimpressive he is, as just the "anyone but Trump" candidate.
One thing which will be decisive will be whether Bernie's supporters actively campaign for Biden (which will be hard for them to accept) or whether some just don't bother turning out and voting - I think this hit Hilary.
If Biden becomes President though, I expect him to be a very unimpressive President and an easy target for Republican media. The best thing he could do is see himself as a one term President and intend to hand over the reins to one of the younger ones next time. So the choice of running mate will be quite interesting.