Completely agreed. She basically took BIden's platform, tweaked it a bit, and was able to use the Biden/Harris campaign funds that was already raised. She was also already gearing up for VP debates and whatnot, so yeah, it makes a ton of sense for her to be able to hit the ground running.

I don't think demographics are particularly important here since it's a literal handoff from one candidate to another. There was no primary, so no mudslinging from other candidates and whatnot, just a smooth baton handoff.

That said, I don't like her as a candidate. In 2020, she was dead last in my list of candidates, and there's a host of potential candidates I'd prefer over her. But those other candidates didn't actually run because Biden was the presumptive nominee, so she didn't have to deal with the polls in a primary. And that's why I think she was able to keep the majority of Biden's support base and get a bit of her own.