Presidential hopefuls were on the campaign trail in San Francisco on Friday, making their way through Moscone Center to chat up delegates to the California Democratic Party convention. But not all the interest was inside the hall, as Massachusetts Sen. Elizabeth Warren drew an overflow crowd of several thousand people to hear her speak on an Oakland soccer field.

Warren was one of 14 candidates who will speak at the weekend-long convention,which has drawn more than 3,400 Democratic delegates from around the state and media from across the nation.

Candidates wandered in and out of caucus meetings Friday, letting the wide range of party groups know they will have a friend in Washington.

Vermont Sen. Bernie Sanders made that explicit when he did a star turn for the state party’s labor caucus.

“As president, my job isn’t just to be nice to unions,” Sanders told a standing-room-only crowd of more than 200 people. “We’re going to be running a workers’ government.”

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At the Chicano Latino caucus, Texan Beto O’Rourke showed the members what they will be getting if they elect the former El Paso congressman.

He delivered the first half of his speech in Spanish, the second language of his hometown. Speaking about his plans for immigration reform, he told the crowd he believes “no en muros, o en jaulas, pero en tratar toda la gente con respeto” — not in walls or cages, but in treating all people with respect.

O’Rourke wasn’t the only popular visitor to that caucus. When Sanders arrived to deliver a short stump speech, the crowd mobbed him for pictures as the moderator begged them to sit down: “If we’re all trying to get selfies, we’ll never get through this.”

The speeches to the full convention start Saturday and will spill into Sunday morning: Delegates will hear from Sanders, O’Rourke, Warren, Kamala Harris, Cory Booker, Kirsten Gillibrand, Tulsi Gabbard, Pete Buttigieg, Eric Swalwell, Amy Klobuchar, John Hickenlooper, Jay Inslee, Julián Castro and John Delaney.

The candidates will have to keep it brief, however, which is tough for any politician. With a crammed schedule that also includes words from most of California’s best-known Democrats and elected officials, each speech will be limited to seven minutes.

Some of the candidates are breaking out of that tightly structured format to meet voters on their own terms. Warren’s “town hall” event at Oakland’s Laney College proved so popular that it was moved from a 2,000-capacity gym to a soccer field, and the candidate came on an hour late.

“I’m coming back to Oakland,” Warren said, declaring that this was her largest town hall to date of the 90 she has held since becoming a candidate.

The country is in trouble, and the 2020 election “will echo for generations,” Warren said as she summed up her campaign plan: “Attack the corruption, put a little different structure in this economy and protect our democracy.”

Amy Neil, 55, a retiree from Albany, was first in line to hear Warren. She arrived at 1:30 p.m. for the prime spot, front and center.

Neil said she is drawn to Warren because the senator has plans to fight the “structural inequities” in society and “can’t be corrupted.” She likes that Warren is policy-driven. But she hasn’t made a final decision on a candidate — she also likes Harris and Buttigieg.

Inside the San Francisco convention hall, delegates were enthusiastically talking about which Democrat they planned to back.

Several campaigns set up booths, wooing delegates to sign up for their mailing lists with stickers and buttons.

Vivian Crowe, 70, a delegate from Riverside County, signed up to get notifications about Klobuchar, one of four candidates she said she was considering voting for. Crowe said she had caught notice of the Minnesota senator during the confirmation hearings for Supreme Court Justice Brett Kavanaugh and liked that she seemed like someone able to reach across the aisle to Republicans and independents.

“I like a lot of progressive issues,” Crowe said, “but I really want things to start getting done in Washington, D.C.”

Her favorite candidate is Harris, but Crowe worries that her prosecutorial approach will turn off voters in the Midwest. She’s also interested in former Vice President Joe Biden, who is not at the convention, and Hickenlooper, a former Colorado governor who she believes would be better-positioned to beat President Trump.

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It wasn’t the presidential hopefuls who provided the sparks Friday evening. An intraparty feud over the Israel-Palestinian conflict went public as delegates sparred over draft resolutions that accused Israel of aligning with white supremacists, “Christian fundamentalist and ultra-right groups” that ignore anti-Semitism and promote Islamophobia.

Palestinian advocates clashed with the party resolutions committee, complaining that their measures were watered down or rewritten to minimize the emphasis on Israel.

“The imbalance we have is we have a people without a state who deserve a state,” delegate Yassar Dahbour protested.

The rewritten resolutions, which were approved by the committee, largely repeat past stances the party has taken that condemn bigotry and racism on both sides of the Middle East conflict. Because the resolutions reaffirm the party’s current position, they are unlikely to prompt much debate when they go before the delegates Sunday.

Party officials worry that other disputes could spill out onto the convention floor, as they did in 2017 when nurses and other supporters of single-payer health care stormed into the hall.

Alexandra Gallardo-Rooker, the party’s acting chair, warned there will be a tough code of conduct at the convention, designed to prevent that type of large, raucous, disruptive protest.

“We don’t want a 2017 again here, I’ll be real honest with you,” she said. “Not gonna have it, not on my watch.”

Delegates also will vote on a replacement for former party Chair Eric Bauman, who resigned after being accused of sexually harassing a number of male party workers.

Kimberly Ellis, a progressive Richmond activist who finished a close second to Bauman in the 2017 election for party chair, is back for another run. Rusty Hicks, head of the Los Angeles County Federation of Labor, and Santa Barbara’s Daraka Larimore-Hall, the party’s vice chair, are the other two leading candidates in the seven-person race.

Voting will be Saturday. If no one receives a majority of the vote, there will be a runoff Sunday morning between the two top finishers.

San Francisco Chronicle staff writers Alexei Kosoff and John Wildermuth contributed to this report.

Tal Kopan, Joe Garofoli and Dustin Gardiner are San Francisco Chronicle staff writers. Email: jgarofoli@sfchronicle.com, dgardiner@sfchronicle.com and tkopan@sfchronicle.com Twitter: @TalKopan @joegarofoli and @dustingardiner