I don't even live in the US and even I know why they can't do that.
The election money is for Biden or if something happens to him, his running mate. They can't just reassign the money to some random other person even if logically it would be a good idea.
This is a stupid law of course, but it's how it is.
Part of it is that various states require that all candidates already be registered before now, so it's Biden or bust in those states - they can't swap him for a different candidate on the ballots there and they can't officially transfer any pledged electoral votes for him either if he wins.
There are enough such states to win Trump the election if they go to him essentially by default. And if they all went to Biden despite Biden stepping down then we'd be in a one vote per state election between the top candidates, which leads to a Trump win.
My understanding is they could work around the law if they really wanted to, but that puts the campaign at some additional risk. Kamala will probably be the candidate in the end because of this. And she's great. Ezra Klein really helped me change my mind about her. I'd rather Taylor Swift, but I don't think she'll try until 2028 lol.
Haha, wouldn't surprise me. Although now that ks to the supreme court the president is now infallible and above the law, so I'd be expecting Trump to have many successors waiting to stab him in the back for the chance at becoming king.