Hopefully they can recruit other proven popular candidates like George Pataki and Jeff Flake and Jeb! and Kasich
Biden and Kerry are a couple of retreads. Sanders is a socialist retread.
Warren is discount Hillary Clinton. What could go wrong with running another retirement-aged Scold from the Northeast who has all of Hillary's likeability (/s) and none of her political clout?
Booker and Harris aren't smart enough.
Wouldn't surprise me to see Jeb! toss his hat in the ring as a Democrat. He'll fail miserably, but he likes to read his name in the paper. Dunno about Flake and Kasich, doubt they're dumb enough to take a swing at it. They're setting themselves up for 2024.
Bloomberg just changed his party affiliation to the surprise of no one. He's likely warming up his campaign bus.
Trump will stomp all of the above. Ergo - I figure that the name will come out of left field.