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Running for mayor of San Francisco is a formidable challenge.

But it’s a challenge that San Francisco nonprofit leader Daniel Lurie is rumored to be exploring.

As the S.F. Chronicle’s men-in-the-thick-of-it wrote in a recent column, Lurie was spotted lunching at AT&T Park’s Gotham Club — four and a half stars on Yelp and “pricey” — with Jewish community philanthropist John Pritzker and S.F. Giants president Larry Baer;  the three were allegedly talking about a possible Lurie mayoral run in 2019.

Lurie, 40,  is the founder and CEO of Tipping Point Community, an anti-poverty nonprofit that recently announced a $100 million pledge to address homelessness in San Francisco. Last year Lurie also chaired the Superbowl 50 committee, which helped raise $12 million that was used to support dozens of local charities.

Lurie advisor Nathan Ballard declined to comment on the lunch and would not confirm the details reported by the Chron.

But Ballard did say this: “Daniel has his hands full right now. He’s the CEO of Tipping Point Community, he’s running the $100 million homelessness initiative. He’s not a politician. But over time many people have approached Daniel and asked him to run.”

Regardless, now that the rumor mill is churning, some think Lurie would have a good shot.

“He’s a very dynamic candidate and has made a tremendous impact in San Francisco — socially, politically, and business-wise,” said Sam Singer, a San Francisco-based public relations expert who specializes in crisis communications. “He’s a good man and a good candidate.”

Rabbi Brian Lurie, Daniel’s father and the former executive director of the S.F.-based Jewish Community Federation, told J. that he would support his son’s bid for office if he decided to run. “I support all four of my children in whatever they want to do.”

Thus far Mark Leno, 65, and three others have filed documents with the city stating their intention to run for mayor. Leno has previously served on the Board of Supervisors and the California State Assembly, where he chaired the powerful Appropriations Committee, and is a founding member of San Francisco Congregation Sha’ar Zahav.