The glaring problem with the 25th is that Harris and half of the Cabinet have to be 100% sure that either Biden won’t object (Biden need only sign two letters) or that they have the 2/3rds majority in both House and Senate to remove him. And how can they be sure that enough Republicans will go along to install Harris as President?
Biden doesn't just go away. He remains President, just unable to discharge the powers and duties of his office. Harris becomes Acting President until such time as Biden is again able to discharge the powers and duties of his office.
This means that Biden remains in the residence and Jill remains First Lady. The White House essentially becomes a nursing home for Biden while Harris works in his office.
Is THAT the image the Democrats want to take into the campaign? Will we see the White House Press Corp constantly asking KJP what Biden's condition is today?
Also, Harris doesn't get her own administration. I suppose she can start firing Biden's Cabinet members and try to get her own people into position in the final six months of the term, but that would be ruthless. She'd be replacing the very people she needed to invoke the 25th amendment. I'd also think that there would be an appeal to SCOTUS to rule on the limits of the "Acting" powers -- can the Acting President make staff changes during the interim that she's discharging the powers and duties of the President's office?
It's going to be a complete optics mess if they don't get Biden to resign the office at the same time as quitting the election.
-PJ