You might want to hold off writing that year-end check to the Deval Patrick for President 2020 “exploratory committee.”

The bust-out ex-governor of Massachusetts was on the political comeback trail last weekend, campaigning in Alabama against accused sexual harasser Roy Moore.

Will wonders never cease — Deval Patrick, of all people, decrying (alleged) sexual predators and assorted criminals. Talk about a change-up pitch. Better late than never, I guess.

In the past, you may recall, Deval’s heart has always gone out more than somewhat to the Al Frankens and Matt Lauers of the world. He’s been known to write a $5,000 check to one of them (convicted rapist Ben LaGuer). As governor, he busied himself trying to stop yet another convicted rapist from being forced to register as a sex offender — his own brother-in-law, Bernard Sigh.

One of Deval’s closest aides at the State House was arrested in Florida for sexually assaulting a 15-year-old boy in a swimming pool, a charge that was dropped after Deval’s hack pal negotiated a monetary settlement with his underage victim.

But that was then, and this is now — just ask Carlos Danger, or even Bill Clinton.

Now a different pol, a Republican, Roy Moore, stood accused of behaving very badly back when he was a Democrat more than 30 years ago.

So Deval Patrick, with a slight case of Potomac fever, journeyed to Selma to take a very belated stand against male sexual predators.

“It’s occurred to me in recent times,” he mused at a Democrat rally Saturday, “that a lot in our democracy depends on unwritten rules.”

But timing is everything, and on the very same day that Deval was talking about those unwritten rules, back in Massachusetts his thug brother-in-law was again violating some written rules — namely, laws against assault with intent to rape.

Bernard Sigh is now being held without bail pending a dangerousness hearing this morning. Mere days after an incredulous reporter for the Washington Post described the failed 65-inch-high statesman as a “rising star,” Deval Patrick is once again way back in the pack of Democrat presidential wannabes, dodging reporters and preparing his traditional Merry Eid address for delivery on YouTube.

As far back as 2006, during Deval’s first campaign for governor, his soft spot for misogynist thugs became a campaign issue. His GOP opponent pointed out his support for rapist LaGuer, asking in a TV spot, “What kind of person defends a brutal rapist?”

Naturally the PC Posse went ballistic. The “r” word was tossed about. This nice young man, a neighbor of another very ethical young Democrat named Brian “Multiple Choice” Joyce, was being “Willie Horton-ed,” a reference to the convicted rapist who haunted Mike Dukakis’ 1988 run for president. According to the Quincy police report, last weekend Deval’s beloved brother-in-law confronted his female victim while “only wearing his underwear.” Sigh, however, caught at least one break from the law. He was not charged with impersonating ex-Rep. John Conyers.

This morning, presumably, Deval is back at Bain Capital, working hard, or hardly working, on his social justice mutual fund. As Deval continues his shadow campaign for president, no doubt he’ll soon be interviewed by one of his big-foot media cronies, perhaps, oh, I don’t know, Tavis Smiley ….?

Oh, I forgot. Never mind.

Order Howie’s new book, “Kennedy Babylon,” at howiecarrshow.com.