Mark Zuckerberg and his wife have vowed to give away 99 percent of their Facebook shares, worth an estimated $45 billion, to charity. | Paul Marotta/Getty Images

Facebook CEO Mark Zuckerberg and his wife, Priscilla Chan, have hired Democratic pollster Joel Benenson, a former top adviser to President Barack Obama and the chief strategist for Hillary Clinton’s failed 2016 presidential campaign, as a consultant, according to a person familiar with the hire.

Benenson’s company, Benenson Strategy Group, will be conducting research for the Chan Zuckerberg Initiative, the couple’s philanthropy. The organization — whose mission statement, according to its website, is “advancing human potential and promoting equality” — is endowed with the couple’s Facebook fortune.

Zuckerberg and Chan have vowed to give away 99 percent of their Facebook shares, worth an estimated $45 billion, to charity. Bringing on Benenson is the latest sign that they’re pushing their philanthropic work more heavily into the political and policy world.

In January, the couple hired David Plouffe, campaign manager for Obama’s 2008 presidential run, as president of policy and advocacy. Plouffe had previously worked at Uber. Ken Mehlman, who ran President George W. Bush’s 2004 reelection campaign, also sits on the board.

And earlier this year, the couple also brought on Amy Dudley, a former communications adviser to Virginia Democratic Sen. Tim Kaine.

Benenson’s involvement in the group gives them access to someone who was one of the top lieutenants of Clinton’s doomed campaign and Obama’s longtime pollster, just as speculation about Zuckerberg’s political ambitions is mounting.

Benenson did not respond to a request for comment. A spokeswoman for the Chan Zuckerberg Initiative said: “As a philanthropic organization focused on a number of substantive issues including science, education, housing, and criminal justice reform, any research efforts we undertake is to support that work.”

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SOURCE: Politico, Annie Karni