I couldn't speculate about a brokered convention. Im sure we will see a lot of clickbait articles about it as we get towards the conventions. It would be someone already vetted. Newsom would be a logical choice, but he is polarizing. And California isnt going to win you swing states. It would need to be someone vetted and willing to end their career if they did not win. So someone old, which doesn't help you with the primary issue in this brokered convention, does it? Most of the dems are old enough to remember 1968, it was their first convention for most of them. They dont want that again. And it might be the fourth or fifth proposed candidate after the first two or three have dethroned Biden but a majority can't be mustered. Lincoln got nominated that way.
But just for giggles, to talk about nothing of substance and just fantasyland a little, let's say the Harris people start floating a narrative through friendly sources in the media that Biden fell or really showed his age and they believe the 25th amendment is appropriate. Crazy talk bordering on treason, but lets say they purposefully float that. And that forces delegates to have "a good faith belief" he is not suitable to be the nominee. That's the only way they cannot vote Biden. She will not be successful in getting the nomination, I would think, her unfavorables amongst Dems are almost as high as among Reps. So she takes a shot at the King and misses. Who next?
Well, if Harris is judged unsuitable, there will be a strong presumption for someone acceptable to the Obama machine who is either POC or a woman or both. Personally, I would say Sotomayor resigning to run would blow people's minds and she might actually win. Is there another person in American who could drive turnout on immigration and abortion besides her that could equal Trump? Biden could appoint her anointed replacement and she could take over if she wins and retire if she doesn't. Maybe even keep Harris on the ticket as a sign of unity. But the safe play, three or four people after Newsom, Harris, and others are judged unsuitable would be Gretchen Witmer. She won Michigan by ten points. And as I said earlier, in this board game of electing a President, without Michigan they are done.
Nominate her, throw disproportionate money into Michigan, PA, and Wisconsin and hope the other states stay in line with where they are now.
They could win that way. America might even be better off than what we endure now.