I thought this article was interesting (14 day giftlink).
Although Kamala Harris is reviving the Clinton playbook, she has so far managed to avoid its biggest fumbles.
Some of this is due to political skill. But much of it is because Harris has one key advantage that Clinton lacked: Thanks to the unusual way she assumed the nomination, the vice president sidestepped a bruising primary—which meant that she did not have to spend the convention mollifying left-wing critics. In 2016, Clinton had to contend with 1,831 Bernie Sanders delegates, close to half of the convention’s roughly 4,000 total. Many of them went “Bernie or Bust,” accused Clinton of stealing the primary, and repeatedly disrupted her acceptance speech and other proceedings…
Freed from the need to appeal to internal opponents, Harris was able to appeal to her skeptics across the country—to embrace elements of moderation not just in style but also in substance.