> Moreover, when the leaders of both parties are opposed to single payer, how in the world do you expect it to ever pass?
I don't. However, if I were a betting man, I'd bet on the Democratic leadership to come around well before the Republicans. Not least because a significant, non-zero fraction of their politicians are already in favor of it (compared to the other side, which has close to zero).
Without a 60-strong majority in the Senate, which must necessarily include some Republicans, it'll never happen. So ultimately Republicans are the bottleneck.
> I'd bet on the Democratic leadership to come around well before the Republicans.
Jeffries was already around. He supported single payer but now rejects it, so he's moving backward.
> Without a 60-strong majority in the Senate, which must necessarily include some Republicans, it'll never happen.
Democrats had 60 during Obama's first term. They'll always find a rotating villain to oppose it, Joe Lieberman, Joe mansion, etc. Anyway, the filibuster can be eliminated. In 2013 Democrats eliminated the filibuster for most nominations, and in 2017 Republicans eliminated the filibuster for Supreme Court nominations.