> I sincerely doubt we are going to see Trump literally cancel elections

The logical path here is for red states to cancel elections and appoint electors to send in January 2029. The feds cannot do it themselves, but they do not need to.

The elections clause of the constitution does not apply to presidential elections, and all the constitution says about that is that the states may choose how to appoint electors, as long as it all happens on the same day.