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VISTA, Calif. – Senator Bernie Sanders is doubling down his efforts in San Diego as he adds a second rally in the North County.

The Sunday campaign rally will be held at the stadium at Rancho Buena Vista High School in Vista.

“They had seen our site through Google Maps I guess they looked and saw the venue that it fit,” said Principal Chuck Schindler.

Schindler told FOX 5 it was only Wednesday afternoon when he heard from the Sanders campaign.

“We were out here until about 6 p.m. last night taking them on a tour,” said Schindler.

The completely fenced in stadium will be a secure site for the rally.

“Between both sides of our stadium and the grassy area it can hold about 5,000 people,” said Schindler.

The city of Vista said the Secret Service spent Thursday morning meeting with city officials and the San Diego County Sheriff’s Department.

The sheriff’s department declined to make comment citing security reasons.

Sanders is holding his first San Diego rally at National City’s Kimball Park on Saturday.

Political Analyst Carl Luna believes Sanders added the Vista event to bolster exposure in San Diego.

“He’s also might be targeting students at Cal State San Marcos,” said Luna. “Support has been strong for Sanders with college students.”

Luna said Sanders hopes to do better in San Diego and the Bay Area to offset Hillary Clinton in Los Angeles.

“It’s the biggest event since I’ve been here,” said Schindler of Sunday’s rally.

He hopes the campaign event will serve as a teachable moment for his students.

“It’s not every time you get to see a presidential candidate close up,” said Schindler. “It’s a great opportunity for my students to see democracy in action.”

The rally starts at 2 p.m. Sunday, the gates at the stadium will open at 11 a.m. The public is encouraged to fill out an online RSVP form.

Sanders is scheduled to speak at Kimball Park in National City on Saturday at 7:30 p.m. The event is free and open to the public, with admittance beginning at 4:30 p.m. Admission will be first come, first served, but the public is encouraged to fill out an online RSVP form.

Attendees are asked to bring only necessary items, like keys and cell phones. No banners or flags will be allowed.