“But the president did little that was obvious to develop Ms. Harris as his inevitable successor. When he dropped out, however, he quickly endorsed her as the only possible replacement and she quickly consolidated his campaign apparatus.”
https://www.nytimes.com/2024/11/06/us/politics/harris-biden-legacy.html
引き際を間違えたために後継者を本番までに十分強くしておくことができなかったって話は多くの人にとって他山の石になるんじゃないか。