What they did was keep telling themselves they were losing and internalized conservative narratives about them rather than having a square level-headed look at reality. They made morality plays and substituted that for reality. That's a real disease of the left in general, across the world. Whether on the moderate or the extreme left side. So because the Dems didn't get a supermajority in the Senate and House races, it somehow means that the Democrat party is on the decline, or that they weren't radical enough and so on. That's a morality play.
Here's the thing, when the right wing loses or gets a setback, they don't get into circular death matches and start beating their chest or talk about going to the center, they simply try harder next time but don't change significantly. That's something to look at because that goes against the idea that you have to somehow accept an election defeat means an idea is defeated at the ballot and discredited.
And what did they do in the '90s of major significance? What major legislative achievement and institutional innovation has Bill Clinton and Tony Blair have to their credit?the third way brought a renewal to the left that allowed it to dominate the 90's.
Winning an election is hard but ultimately it's just Step 1 of a plan. Clinton and Blair winning elections doesn't validate their style of government or legacy or the actual choices they made to get there.It doesn't mean that Clinton and Blair made the right choices in the 90s and somehow that they're an example to follow/emulate in the 2020s.