America is changing at a revolutionary pace: the white majority is hurrying towards minority status. And the electorate reflects that. Non-Hispanic whites were 87% of the voters in 1992. Exit polls suggest that they were 72% this time around.
Hispanics were 2% of voters then. They are 10% now. But over a long summer and autumn of Republican events - the convention, rallies, meetings in diners and homes - I searched in vain for any sign of them.
There is more to Republican electoral discomfort than just the Hispanic vote. Halfway through Tuesday night, renegade conservative commentator David Frum tweeted: "Upper class TV commentators think the only change the GOP needs is on immigration. Of course they all have health insurance."
He was pointing, rather sharply, to the lack of policy ideas that might excite on the Republican side. It was just not good enough to try for a referendum. The Republicans needed more.
But without the increasing Hispanic share - Romney won 27%, down from an already low 32% in 2008 - the Republicans will not win nationally, however good their ideas.
Early on Tuesday evening, a shocked-looking Bill O'Reilly, a firebrand conservative talk-show host, went on the Republicans' favourite news broadcaster, Fox News.
"The white establishment," he said, "is in a minority".
"The demographics are changing. It's not a traditional America anymore."
The challenge for Republicans now is simple: change or die. Because, with or without you, America is changing fast.