Democratic Primaries

-qualified woman of color
-hefty resume, from a large state, can step in as president easily.
-tough, no fear of attacking (Joe himself knows that well, lol).
-battle tested on the campaign trail, no surprises.
-attractive with starpower. this matters, especially with Biden being old. can't have two old or boring people on the ticket.

Klobuchar would be Tim Kaine 2.0, a pick for supposed geographic help, but really adds nothing, as Joe himself polls well in the Midwest and performed well in the primaries there.

To win we need to Obama coalition and Kamala helps on topics Joe will be attacked on, like his past mixed record on women and civil rights. Kamala can win the suburban soccer moms and urban PoC alike.