Alabama Senate candidate Roy Moore has been raking in the campaign cash ever since controversy exploded last week over allegations of his predatory behavior toward teenage girls in the 1970s.

“Donations have been pouring in from Alabama and from all over the country in an unprecedented way,” Moore campaign manager Brett Doster told The Post on Saturday.

Moore’s campaign raised $500,000 in three days last week and ramped up its online fundraising efforts, Doster said.

The embattled Republican collected more online donations between Nov. 10 and Nov. 15 — the first six days after the scandal broke — than in the six weeks after winning the GOP nomination in a contentious September primary, Doster confirmed.

“We are confident that we will have the resources over the next three weeks to finish strong with victory,” he said.

The rush of donations from the controversial former judge’s conservative fans comes at a critical moment for Moore, who has lost the support of the Republican National Committee and the GOP’s Senate campaign arm in the wake of the explosive allegations.

Nine women have come forward over the past 10 days accusing Moore of sexual impropriety.

Three said that he groped or assaulted them in the late 1970s or early 1990s. Others said that he pursued or dated them while he was in his 30s and they were just teenagers.

Moore and his wife, Kayla, have denied the allegations — which are nearly impossible to prove or disprove, since they occurred decades ago.

In a radio interview set to air Sunday, Moore hotly disputes evidence that attorney Gloria Allred offered Monday to back a claim of sexual assault in 1977: his signature in the high-school yearbook of Beverly Young Nelson.

Moore called the inscription a “forgery” and a “complete fabrication” that was created from a version of his signature that appeared in Nelson’s 1999 divorce decree.

The evidence-tampering, Moore said, proved that “what they have alleged is completely untrue.”

Moore’s scandal has also fattened the wallet of his Democratic Party opponent, Doug Jones — who took in about $250,000 a day in the first few days after the Moore allegations emerged, NBC News reported Friday.

“We have seen a pickup in fundraising since Roy Moore was nominated and Alabama’s choice became clear,” said Jones campaign chairman Giles Perkins.

The most recent official fundraising tallies, submitted Oct. 15, showed Moore with a strong advantage over Jones in the firmly Republican state.

Moore took in $2.5 million during the previous month’s six weeks, while Jones raised $1.6 million.

In mid-October, polls indicated that Moore would cruise to victory in the Dec. 12 special election — despite a lack of support from GOP senators like Senate Majority Leader Mitch McConnell, of Kentucky, who was stung by the defeat of his preferred candidate, Sen. Luther Strange.

But after the scandal broke, some surveys showed the Moore’s advantage cratering

A Gravis poll of 628 likely Alabama voters released Friday found Jones with a 5-point lead over Moore.

Despite Moore’s declining numbers, he can’t be counted out.

Support for Donald Trump in 2016 dipped sharply when an outtake from an “Access Hollywood” segment, taped a decade before, revealed him discussing women and boasting of sexual conquests in vulgar terms.

But he recovered from the setback and won the election with a last-minute surge among voters in the Rust Belt and the South.