UNIONDALE, N.Y. — President Trump left the White House on Friday and flew to Long Island to deliver remarks at Nassau County's David S. Mack Center for Training and Intelligence—the county police academy—with a 3 p.m. scheduled start. After the event, he is set to depart for Bedminster, New Jersey.

The trip is a dual-purpose outing: a White House event framed around public safety and a campaign stop for Nassau County Executive Bruce Blakeman, who is running for New York state governor in November. The venue and the messaging—"Make America Safe Again," displayed on posters and large screens throughout the hall—reflected that pairing.

Trump is expected to deliver remarks on declining violent crime rates nationally. Blakeman has long promoted Nassau County as the safest county in the United States, a designation he claims ownership of. That label, however, first attached to Nassau under his predecessor, Democrat Laura Curran, who held the county executive office before him.

Hundreds of supporters packed the bleachers well ahead of the president's arrival. Many wore red MAGA caps; others came in Trump-themed shirts and earrings. One attendee showed up in a sequined jacket reading "ICE, ICE baby"—a reference to both Blakeman and Trump's joint posture on immigration enforcement. At least one woman led the crowd through a dance to YMCA by The Village People.

Supporters said they had waited in line for hours under a summer sun before security opened the doors. A Trump impersonator worked the crowd earlier in the morning, posing for photos. As the wait stretched on, water was passed out and bags of popcorn were thrown into the line.

Robert Mannino, 18, a sophomore at CUNY Staten Island and treasurer of his campus chapter of Turning Point USA, said he arrived at 7 a.m. to secure a spot. "It's just a bunch of patriots getting together, trying to save America from Democratic socialism," Mannino said. He wore a white "47" hat he attributed to Turning Point USA and said it was his first Trump rally.

Christine Dellacona, 59, a legal secretary from Massapequa, said she had no interest in politics before Trump entered the race in 2015. She wore heart-shaped Trump earrings and a shirt reading "I'm still a Trump Girl, I Make No Apologies." "I just love that he's not a politician, he's authentic, he's not afraid to say what he's thinking," Dellacona said. "Maybe he says the wrong thing sometimes, but at least he's not lying."

Victor Ducos, 42, of Medford—who works in food delivery and trades derivatives—said Trump's 2015 campaign entry pulled him into politics as well. "The mighty Don, president of the United States gets me pumped up," Ducos said.

For Blakeman, Trump's visit is a major endorsement heading into a statewide race in New York, a Democratic-leaning state that has not elected a Republican governor since George Pataki left office in 2006. Nassau County, which sits on the western end of Long Island, has long been one of the more reliably Republican suburban jurisdictions in the state.

The public-safety framing gives both men political ground they want to hold. Trump enters with national crime statistics as a talking point; Blakeman runs on a local record he has been building since taking the county executive post. The question hanging over that record is the attribution problem—the safest-county designation predates his tenure and originated under a Democrat.