Tammy Baldwin, Elissa Slotkin, and Jacky Rosen are all women who won senate races in states Kamala lost (WI, MI, NV). There’s also Ruben Gallego, a Hispanic man who’s winning in Arizona. So your “simplest explanation” is that these sexist, racist bigots were fine with voting for women (one of them a queer woman at that) and minorities for senate but not for president (for some reason) as opposed to the idea that Kamala Harris was just an unpopular candidate. That’s not the simplest explanation, it’s just the laziest.
You know you’re cooked when Bill Kristol is going around like, “Hey, shouldn’t you be running a more progressive campaign to turn out more voters?”