Biden should have gone with Tammy Duckworth as his VP. She can relate to Midwesterners because she's from Chicago, and she can relate to flag-waving Patriots™ because of her military service. Not to mention, she's a pretty consistent progressive and she has no real scandals or baggage, in stark contrast to Harris. Kamala Harris is absolutely despicable. She is as duplicitous and two-faced as it gets, and that's not even touching the tip of her ultra-corrupt iceberg of mass incarceration, fascist authoritarianism, fucking her way to the top, and being a corporate stooge. Harris spent much of her time during the primary debates vigorously slamming Biden for his racist and sexist past, only to then cozy up to him and kiss his ass once she got the offer to be his running-mate. Neoliberals have absolutely no principles of any sort, and they stand for absolutely nothing. It's painfully obvious that Biden only picked Harris because of some idpol checklist, and because he desperately wanted to prove that he wasn't racist or sexist. Boomercrats vigorously ate it up, of course, but I saw absolutely no enthusiasm anywhere else.
If Biden really wanted to win in a landslide, though, he should have convinced Michelle Obama to be his VP. That's who Republicans feared the most. Nothing makes conservatives shit their pants more than the thought of a third term for Obama.
Kamala Harris will soundly defeat Trump this year, but, considering that Trump is a convicted felon and rapist who tried unsuccessfully to overthrow the government, that isn't exactly saying very much.