President Biden has long maintained the delusion that history will see him as a great leader, and he’s clinging to it to the bitter end.

In an “exit” interview with Susan Page, USA Today’s Washington Bureau chief, Biden reviewed the last four years with nonstop nonsense.

Blame his failing faculties, the White House bubble, his lifelong pretensions to be a more than just an extremely fortunate hack politician, or all three.

Risibly, he again claimed he could have beaten Donald Trump in the last election, had his own party not elbowed him out.

“The polling” showed it, he claimed.

What polling?

The surveys that showed his chances tanking following the June debate?

The ones that revealed only 24% of Americans considered him “mentally sharp”?

Maybe he was deceived by someone he trusted; maybe he deceived himself; maybe he’s just decided to forget the facts.

We’re within throwing distance of President-elect Donald Trump’s inauguration after he delivered a historic whooping to Democrats, and Biden has not let a single ray of reality slip through the cracks of the self-flattering myth he’s built for himself.

Biden wouldn’t have won in a showdown against Trump — In reality by staying in he likely would’ve cost Democrats dozens more seats in Congress.

Democratic leaders knew this, Democratic voters knew this; everyone, it seems, knew this but Biden.

But his self-delusion goes deeper: Asked what will “endure” about his legacy, Biden responded: “I hope that history says that I came in and I had a plan how to restore the economy and reestablish America’s leadership in the world . . . And I hope it records that I did it with honesty and integrity.”

Any history book that says that will belong in the fiction section.

Biden’s plans slammed the economy, slowing job and wage growth and fueling record inflation with one mega-spend stimulus bill after another.

His weakness inspired Russia to invade Ukraine and Iran to send its pawns against Israel.

He allowed China to test our weak spots with surveillance balloons, hackers and spies.

He horribly compromised America’s standing on the world stage.

His legacy will be leaving his party, his country and the world worse off than he found them.

As for “honesty and integrity,” he threw a middle finger to both by spending his entire presidency hiding his fast-deteriorating mental state from the public and lying about the border being secure, not to mention going back on his promise not to pardon influence-peddling, tax-dodging son Hunter on his way out the door.

Biden’s told many fibs over political career, but possibly none have been more far-fetched than the one he’s told himself — that he was a good president.

The voters were wrong.

The polls were wrong.

Nancy Pelosi, Chuck Schumer and Barack Obama were wrong.

In Biden’s mind, he wasn’t appreciated in his time, but history will see him as the second coming of FDR.

He’s bought that fantasy hook, line and sinker.

As the sun sets on his term as president, it seems he’s the only one who did.