Gov. Cuomo stepped into a new electioneering snafu on Sunday when he stood at the pulpit of a Bronx church to make an official executive announcement — flanked by video screens showing his current campaign poster.

Cuomo made what his office said was an official government visit to the Heavenly Vision Christian Center to announce a planned lawsuit over President Trump’s response to hurricane-ravaged Puerto Rico.

But when Cuomo began speaking, two flat-screen TVs displayed a slideshow with images that included a poster saying “CUOMO FOR GOVERNOR.”

The ad features Cuomo’s smiling face and campaign logo, which has a red check mark superimposed on the “M” in his name. Video of the speech, including the screens showing the poster, was immediately posted on his official gubernatorial Web site and YouTube account.

During his speech, Cuomo accused Trump of violating the Constitution by giving Puerto Rico “a different level of care than Texas and Florida and other states” following Hurricane Maria last year.

“We’re going to hold ‘King’ Trump to the Constitution of the United States, and the Constitution said equal protection under the law. Puerto Rico did not receive equal protection under the law,” Cuomo said.

The video of Cuomo’s 16-minute speech showed the camera zoom in on him after about 90 seconds. Both TV screens are dark when the camera zooms back out around the 3-minute, 20-second mark.

A Cuomo spokeswoman blamed the church for the display of his campaign poster.

“This was a government event and while we appreciate that the church produced materials to welcome the Governor, as soon as staff realized they were campaign related, we asked them to be taken down and they were,” spokeswoman Dani Lever said in an e-mail.

The video was altered to eliminate all but a brief, partial glimpse of one sign. Lever thanked The Post “for bringing it to our attention.”

Heavenly Vision released a statement Sunday night claiming the image was selected by its media team — which was unaware that it contained the campaign logo.

Cuomo is running against former “Sex and the City” star Cynthia Nixon in the Sept. 13 Democratic primary. Nixon spokeswoman Lauren Hitt said Cuomo “has truly been shameless when it comes to using government resources to promote his campaign, but this is a new low.”

In June, The Post exposed how pro-Cuomo signs bought by his campaign were distributed from a Department of Transportation truck at the NYC Pride March. Last month, The Post also revealed that the Department of Motor Vehicles mailed out voter-registration flyers touting how Cuomo “is expanding access and opportunity to New Yorkers to register to vote.”