Rep.-elect George Santos and his staff lived it up on his campaign donors’ dime while he spun a web of lies that now threaten his political career even before he officially takes office next week.

The election season spending spree included:

The 34-year-old’s campaign also covered five stays at the Garden City Hotel in his Nassau County-based district — costing nearly $3,000 on top of the almost $11,000 more spent on renting an apartment for “staff.”

“The sheer volume of travel is very unusual for congressional candidates,” Daniel Weiner, a former Federal Elections Commission lawyer who now works at the NYU School of Law’s Brennan Center for Justice, told The Post Friday about Santos’ campaign spending habits.

“He was running for Congress on Long Island. What was he doing? You know, was there a campaign purpose for those trips? That’s the question everyone is asking,” he added.

Santos and his attorney did not respond Friday to requests for comment.

The rookie pol — who copped to The Post this week about numerous lies about his education, work history and wealth — has denied breaking any laws as local and federal prosecutors begin scouring his campaign fundraising and mysterious personal finances.

His campaign filings are also raising eyebrows for including many dozens of line items describing expenses on flights, taxis, parking, office supplies, food and beverages that are exactly one penny — or other small amounts — less than the $200 limit above which candidates must provide receipts detailing the campaign purpose of such spending.

For example, an Oct. 13 stay at the W Hotel in South Beach was listed as costing just under $200 — when the hotel’s website shows the cheapest rooms for the same date in 2023 run nearly $1,000 each.

“The $199.99 repeating expenses are screaming that he’s hiding something,” said election lawyer Sarah Steiner.

“It reminds me of the people who deposit just under $10,000 repeatedly,” she added, referring to reporting requirements placed on currency transactions.

According to an analysis on Twitter by Chris Walsh, who served as campaign manager to Rep. Pat Ryan (D-NY), who represents the Hudson Valley, about 29% of Santos’ self-reported campaign spending was on fundraising, with 28% put toward advertising, 27% on administrative expenses, and just 5% on travel.

“It’s INSANE!” Walsh tweeted Tuesday. “Good campaigns would never let Advertising (AKA: communicating your message to voters) dip below 70% of their budget & spending more on fundraising than paid comms is wild.”

“Though there is no definition of a ‘Scam PAC,’ if I saw these numbers on a PAC, I would call it one and advise everyone to not give to it,” he added.

Santos is hardly the first pol accused of misusing campaign funds.

Former Rep. Duncan Hunter (R-Calif.) was sentenced to 11 months in the federal pen in March 2020 after taking roughly $250,000 from his campaign kitty to help cover up his extramarital affairs, including Uber rides to encounters with at least five women.

His donors also got stuck with a $500 bill to fly his kids’ pet rabbit Eggburt across the country as well as splurges on family meals and vacations to places like Italy and Lake Tahoe.

Another former House member, Jesse Jackson Jr. (D-Ill.), was sentenced to 30 months in federal prison in 2013 after pleading guilty to nicking $750,000 from his campaign war chest.

Santos has not been formally charged with committing any crimes other than an unresolved allegation of check fraud in Brazil, first reported by the New York Times, but experts say possible campaign finance violations are hardly the biggest legal danger facing him right now.

“The bigger questions is: Where the hell did he get $700,000?” election lawyer Marty Connor told The Post Friday, referring to a loan that Santos gave his campaign supposedly by making money selling luxury goods at a company with no known clients.

The embattled future rep, who is fighting calls to resign before taking office Jan. 3, had claimed a five-figure income before running for Congress for the first time in 2020 — following a checkered past that included a stiffed landlord and eviction. However, more recent disclosures showed him claiming an annual salary of $750,000 — along with dividends from his company amounting to between $1 million and $5 million.

Santos also did not disclose clients whose business with him exceeded $5,000, despite such an accounting being required by law.

“He doesn’t have a pot to pee in,” Connor said. “Where does he suddenly two years later come into not only $700,000 — but $700,000 that he can dump into a political campaign?”