They need a good white/Hispanic Christian heterosexual male and they just don't seem to have one at this point. Gavin Newsom is the face of everything that is ( allegedly ) wrong with California. Mark Kelly is not a great speaker. They tried with Walz, but even I had a trouble imagining him going face-to-face with Putin.
If there was a democratic Mark Rubio he would have mopped the floor with Trump. I wouldn't necessarily say that the country is not ready for a black female president, but I think a lot of people think that Democrats only care about minorities and I think Harris just enforced that belief.