Broadly speaking, people don't pay attention. The message from her campaign[1] was that she would do nothing differently from Biden. This is a mistake even if (especially if!) her actual policies are different from Biden's.

The only thing Harris could come up with was, eventually: "unlike Biden, I will have a republican in my cabinet".

[1]: https://www.politico.com/news/2024/10/08/harris-biden-the-vi...