I think it will be JD Vance for a couple of possible reasons.
Trump is old – he is obese and he is always angry which can lead to a heart attack.
Or maybe he will be impeached and removed from office.
If Trump does have a heart attack he could become a vegetable – and I think that vegetable will be a tomato - because a tomato is not really a vegetable and Trump is not really a president (he only serves himself not the American people). Cheers and happy holidays!