There is something rather like irony for both parties in this omnishambles US election: whichever one loses, it will be all their own fault. Michael Pascoe.
If the Republicans had chosen Nikki Haley instead of Trump, the election would be as good as over. She would have creamed it, tapping into voter dissatisfaction without stirring voter fear.
Trump has been the best thing going for Harris. In a tight race coming down to a relative handful of votes in an actual handful of states, it has been the dislike/fear/revulsion sparked by Trump that will make the difference for a Harris win.