Who? Who would be capable of gathering the trump support and getting enough votes? Part of the right wing powerful 1 guy thingy is this: 1 guy. Take the guy away, and you have no idea what would happen and if someone else would manage to keep the gathered power going and maybe gather even more. Would be very different if trump were president when it happened, then the power is formalised and the takeover by another supervillain easier, but during campaign that would be quite the feat and I'm really wondering who would have been capable of it.