President Trump is riding to Roy Moore’s rescue in Alabama one week from election day.

Trump called Moore on Monday to heartily re-endorse him, a move that’s likely to help boost Moore as he seeks to survive multiple accusations of sexual misconduct that have put his Senate campaign in jeopardy in deep-red Alabama.

The Republican National Committee decided to follow suit after Trump’s call, TPM confirmed Monday night, after the committee had earlier suspended its support of Moore. Though it’s as yet unclear what exactly they’ll do for Moore, last-minute aid to help bolster his weak fundraising, limited TV ads and limited field operation could make a crucial difference.

Those steps, and a Friday Trump campaign rally just over the state line in Florida, could make the difference in a close election in a state where the president remains popular — and where boosting turnout is all that matters.

“The president’s approval rating goes off the paper it’s so high. When the president says ‘this is why I need a Republican from Alabama,’ that matters,” Perry Hooper, Trump’s Alabama state chairman, told TPM on Monday. “That message will resonate strongly in Alabama.”

According to Moore’s campaign, Trump called Moore a “fighter” and closed the phone call from Air Force One by declaring “Go get ’em, Roy!” The White House confirmed that Trump called Moore and reaffirmed his endorsement.

That came just after Trump touted Moore’s campaign for the first time since nine women came forward to accuse Moore of acting inappropriately towards them — including one who said Moore initiated a sexual encounter with her when she was just 14 years old and another who said he sexually assaulted her when she was 16.

Democrats refusal to give even one vote for massive Tax Cuts is why we need Republican Roy Moore to win in Alabama. We need his vote on stopping crime, illegal immigration, Border Wall, Military, Pro Life, V.A., Judges 2nd Amendment and more. No to Jones, a Pelosi/Schumer Puppet! — Donald J. Trump (@realDonaldTrump) December 4, 2017

Democrats admit Trump’s gambit could work in a close race, convincing reluctant Republicans loyal to Trump but worried about Moore’s temperament and past actions to turn out and vote on Dec. 12. The more aggressively Trump backs Moore, the more he could help.

Public and private polls show a tight race, and the biggest question on all sides remains who will turn out in an oddly timed election where Moore and Jones are the only candidates on the ballot. While Trump’s popularity has sagged nationally, he remains well-liked in Alabama, where he sports some of his highest approval numbers of any state, and is beloved by the most of the state’s GOP base. Moore has bounced back in the polls since Thanksgiving, pulling even with or ahead of Jones in recent surveys after trailing him in the scandal’s immediate aftermath, though strategists in both parties admit they have little idea who is likely to turn out next Tuesday.

And while Jones is outspending Moore 10-to-1 on advertising and has a much larger and more professionalized field operation, a bit of a push from Trump narrows Jones’ narrow path to victory even further in a state no Democratic candidate has won in the past decade.

“What Trump can do is help join the barrage of people cruelly attacking these accusers and normalize an accused pedophile because Trump has been very successful at attacking his own accusers,” one national Democrat monitoring the race told TPM. “If you’re a Trump supporter looking for an out [to vote for Moore], this gives you one.”

The White House has said the president won’t campaign in-state for Moore. But he’s doing the next-best thing, with a Friday campaign stop in Pensacola, Florida — a site that’s just 15 miles from the Alabama border in a town whose media market covers roughly a quarter of the state. When TPM asked Sen. Bill Nelson (D-FL) who Trump was targeting with the rally, he didn’t mince words: “Alabama.”

Trump’s campaign has been making robocalls featuring Lara Trump advertising the event all over the state of Alabama, according to sources, and it’d be unlike Trump to avoid any mention of Moore during the event.

“Trump’s still got a good following down there,” Sen. Richard Shelby (R-AL) said Monday on Capitol Hill.

Trump’s endorsement may help win the battle for the seat, but many in the GOP worry a Senator Moore could do further damage to the party’s image that has already been hurt by Trump.

“It’ll be difficult enough for Republicans without us being the party of Roy Moore,” Sen. Jeff Flake (R-AZ), a frequent Trump critic, told TPM Monday night.

Roy Moore in the US Senate would be a stain on the GOP and on the nation. Leigh Corfman and other victims are courageous heroes. No vote, no majority is worth losing our honor, our integrity. — Mitt Romney (@MittRomney) December 4, 2017

Trump’s allies have already been rallying to Moore’s side.

Former White House chief strategist Steve Bannon will appear with Moore on Tuesday night, rejoining a man he backed during a hard-fought primary against Sen. Luther Strange (R-AL), who had the backing of most of the GOP establishment and reluctant support from Trump. The grassroots group Bikers for Trump also rallied for Moore on Sunday.

Other Republicans who’d previously shunned Moore have softened their criticisms in recent days. Senate Majority Leader Mitch McConnell (R-KY), who’d called on Moore to drop out of the race in the wake of the allegations, said it should be up to “the voters of Alabama to decide” whether or not to elect him on Sunday.

Trump’s re-endorsement comes after weeks off GOP lobbying on the race, with top Trump advisers and allies including Bannon and Kellyanne Conway pushing for him to stand by Moore while others including McConnell fought hard for him to cut Moore loose. Trump decided the accusations against Moore mirrored those from 17 women who accused Trump of sexual harassment during last year’s campaign, sources told TPM.

“I talked to Jared Kushner, I talked to Eric Trump and Eric’s wife [Lara], [White House Deputy Chief of Staff] Rick Dearborn and others who work in the West Wing … they just know they need another Republican vote and they can’t afford to lose another Republican vote,” Hooper told TPM.

Trump’s campaign and the White House declined to discuss any further steps Trump might take for Moore.

Jones’ campaign believes that Trump can only make so much of an impact, pointing out that Moore beat his favored candidate in the primary and arguing that Alabama voters have made up their mind on Moore.

“This is an Alabama race. It doesn’t seem to matter what outside folks say, even if it’s the president it doesn’t seem to have a whole lot of impact. Roy Moore’s a pretty known quantity, people know why they’re worried about him or why they’re not,” Jones adviser Joe Trippi told TPM.

But Trippi conceded that the race is all about turnout rather than converting swing voters at this point — an area where Trump might have a big impact.

“This isn’t about changing anyone’s mind. I don’t believe that’s what they’re trying to do,” he said. “It’s about can they get people out to vote.”