As VP, Harris was the natural choice to be the "heir apparent" to Biden although probably not the Dem's best option as the Party's nominee.
Much like her rise and fall back in 2019 during the Democratic Primary, when she initially garnered great enthusiasm, only to watch it fizzle,
history repeated itself in her presidential run, which also showed much promise early on, only to lose steam down the stretch.
I have to wonder how different [if at all] the outcome of the election would've been if Biden had announced a year earlier that he was not going to run again.
This would've allowed ample time for an actual Democratic Primary process to determine who best should lead the party.
The political disaster that unfolded on Tuesday may very well have been averted were it not for Biden's [initial] misguided decision to run again.