It’s an endorsement no one wants.

Convicted ex-Long Island Rep. George Santos is calling on fellow Republicans to cross party lines and back NYC Mayor Eric Adams’ re-election bid.

The former congressman who fell from grace recently posted multiple messages on social media this week, pleading with GOP mayoral candidate Curtis Sliwa to withdraw from the race. He also urged other GOP members to come together in support of Adams, as he is convinced that Adams is the strongest contender to defeat socialist Queens Assemblyman Zohran Mamdani in the upcoming general election in November.

“New Yorkers are at a crossroads, and the stakes couldn’t be higher,” Santos said on X shortly after ex-Gov. Andrew Cuomo conceded to Mamdani in the Democratic mayoral primary.

“The choice is clear: Eric Adams is the only viable path forward. Republicans, conservatives, and common-sense voters must recognize reality—Curtis Sliwa cannot win this race,” added Santos, who is headed to federal prison for seven years on July 25 after copping to plea fraud and identity theft charges. 

“Clinging to fantasy only helps the opposition.”

Santos on Wednesday suggested Adams and the Guardian Angels founder iron out a similar “coalition” to one Health and Human Services Secretary Robert Kennedy Jr. cut before dropping out of last year’s president race to back future victor Donald Trump.

“Hey @NYCMayor,” Santos posted on X. “Call Curtis Sliwa and appoint him Deputy Mayor of public safety today and get a coalition going to save NYC!”

Adams, a Democrat, is running as an independent. Despite losing the primary, Cuomo is still on the November ballot as an independent.

Sliwa insisted he’s staying in the race, adding Santos is a fraudster with “no credibility.”

Adams campaign spokesman Todd Shapiro dismissed Santos’ support, saying Adams is “focused on building a broad, credible coalition rooted in integrity and results — not circus sideshows.”