I've been thinking (and having acrimonous and noisome flamewars on US-focused venues) about the not-exactly-surprising failure of the Democratic Party to deliver an unequivocal victory---or even a non-defeat, on some issues---to the American left. Clearly there are political, social, environment, moral crises that demand immediate attention, but the vicissitudes of American politics allow the Democrats to remain---being generous---only a smidgen better than that actual practical behaviour of Republicans.
And yet, considering all the other options, the blackmail that the Democrats hold over the lefter wing of the American population happens to be, well, grounded in something real. It really is true that any attempt to abandon the Democratic party would lead to Republican government. And there's really no evidence that Republican government leads to any serious left backlash in the population as a whole. If anything, it pushes the discussion further to the right faster than it would be pushed under Democrats.
The likely end of this is not good, but at the same time I still can't see a practical way out of at least nominal support for Democratic electoral prospects, in the absence of any sort of viable plan B.