If Michelle or Colin Powell would accept it, then the election is over. Trump can go and play golf.
Otherwise, Tulsi Gabbard, US House Representative from Hawaii.
A no-nonsense Congress person who has done her tours in Afghanistan and sounds at least half-way intelligent. She reminds me of someone with the "balls" of Hillary Clinton but doesn't fly around on a broom. One downside is that she is from Hawaii, a State that the Dems will win in any case, so there is no help with her in battleground States.
When our choices for President are Beevis or Butthead, and our current VP who would better serve as a department store mannequin, we have to have a good VP ready to step in.