Is the 1984 Reagan rout the worst in election history?
I think it may be the largest EV total, perhaps the largest EV percentage (maybe Roosevelt’s was higher in ‘36, I don’t know). As far as PV goes, it was not a record. Johnson’s clobbering of Goldwater in ‘64 is still the largest PV percentage, at least in modern elections (Washington’s was higher, but that wasn’t much of a contest).
I believe the electoral vote for George Washington in 1788 was unanimous.