Best decisions made by losing campaigns?

[pikachu]

I think, understandably, that a lost of the post-election analysis of elections focuses a lot on what the winning campaign did right and the losing campaign did wrong, but obviously not everything that the winner does is right and the loser does is wrong. I feel like there's a decent amount of analysis about winners' mistakes, so I'm interested if people have anything to point out in the other direction: great decisions made by the losers, notable areas of overperformance, etc.