Serious articles were written in the 1980s claiming that there was a Republican 'lock' on the White House. Such claims were nonsense then and are nonsense now.
Well, from 1968 to 1992 there was a kind of republican lock. Of course it was more contextual than structural.
Exactly. The Democrats could have won in 1968 with a more charismatic candidate (and no Vietnam War). And if Carter didn't screw up so badly or was never elected in the first place, I seriously doubt the GOP would have won all 3 Presidential elections held in the 1980s.
Which goes back to was I was saying about how each election has more to do with the individual candidates and preceding events than any sort of perceived partisan lock on the Oval Office.