That was a result of a law passed by Congress back in 1929, not a constitutional change, which was a time when the rural and urban populations were roughly equivalent. That law needs to go or be amended.
I had looked up the stats a few weeks ago. The answer is no. Nixon’s EC vote was too high – 301. Add the states that Wallace won (all deep south) 46 EC to Humphrey (191 EC) and it still wouldn’t have beaten Nixon’s EC edge. But it is likely that giving those states’ votes to Humphrey would have given him the popular vote – they were almost even in the popular vote numbers. So Nixon would have won anyway. The one thing that might have happened would be the screaming about the EC led to the votes in Congress to get rid of the EC, or at least do massive reforms to it.
I guess you weren’t around in 1968 and 1972. Both conventions were disasters because Ds didn’t unite before the convention. And we got Nixon because of the D infighting.
Ditto Trump.