The prediction of Vivek Ramaswamy, former presidential candidate, is the Democrats will soon dump Joe Biden as their candidate for the 2024 presidential election, and opt for either Kamala Harris or Michelle Obama. As he said: "The Democratic Party is wedded to identity politics. The only reason Kamala Harris got that job, frankly, is because she was a black woman. Don't take my words. Take it from the words of the Democratic Party itself, which leaves Kamala Harris or Michelle Obama. That's where I predict this plot ends. And I don't think it's going to happen particularly soon. I think it's in their incentive to wait as long as possible. And that's exactly where I think the game goes from here."
There are some opinion polls that have Michele Obama beating Trump 50 to 39. But others see Obama falling. Nevertheless, it is highly likely that something like this will be tried with Biden collapsing by the way.
https://conservativecompass.substack.com/p/is-the-us-presidency-on-autopilot
https://vigilantnews.com/post/vivek-ramaswamy-predicts-joe-bidens-replacement/
https://www.americanthinker.com/blog/2024/07/michelle_the_one_half.html