It’s rare in the extreme to see and hear a candidate for high public office do what Donald J. Trump has done.

The Republican nominee for president of the United States not only is campaigning against his Democratic foe, Hillary Rodham Clinton, he’s also declaring war against the political system that is likely to elect her to the highest office in the land.

As many of us have noted so often during this election year, in any other election cycle, such a preposterous campaign tactic would be an immediate disqualifier.

Not with Trump, the huckster extraordinaire.

This clown in chief has managed to cast aspersions on the very system of electing people to high public office. I do not believe he’ll be able to win the election. However, he has fired up the base of his once-great party to the point that nearly half of his fellow Republicans believe that a Clinton victory will be the result of a “rigged” election.

This is scary stuff, folks.

Some of them are talking about open rebellion if/when Clinton wins. What’s worse is that Trump is fueling that hideous narrative by suggesting he won’t honor the results if/when Clinton gets elected.

The Washington Post’s Dana Milbank writes that Clinton’s strategy now is to not only defeat Trump, but to “humiliate” him by pressing hard in normally GOP states such as Utah, Arizona and, yes, Texas.

Historians are going to think long and hard when they write about the implications of this election. Clinton and Trump both describe it as the most  consequential election in generations. I agree with that, but perhaps not for the stated reasons they believe.

The consequence quite likely may lie in what it means moving past Election Day — and whether Donald Trump’s declaration of war against democracy itself will result in a further undermining of our electoral system.