It would be fortuitous. Trump would finally be humiliated and laughed off the debate stage.
As the political winds blow, the lefty darling is Buttgagag. If Buttgagag chooses a centrist, say, Sherrod Brown, I would worry that the two would cause some competition for Trump. Other than that, the kommiecrats have no chance to gain the Whiehouse in 2020. Go Bernie!