Britt pointed me at this piece about how Lieberman still has very strong support:
There’s an important lesson in here. When you hang principles on a single race, and then lose, the principle goes with the race and suffers a horrible blow. This >WAS< the Dean mistake – it represented the internet way, and everybody fled when he lost, and how long has it taken that approach to recover its reputation?
When Lieberman wins, the ENTIRE “unseat the incumbents” approach dies a horrible death, in one single event.
How to dissociate the principles from the individual race?