Facebook CEO Mark Zuckerberg hired Hillary Clinton's former pollster as the tech mogul denies that he's running for president.

Joel Benenson, the chief strategist in Clinton's 2016 presidential campaign, is conducting research for Zuckerberg and wife Priscilla Chan's nonprofit, the Chan Zuckberberg Initiative, Politico reported Wednesday.

While Benenson's work, done through his company Benenson Strategy Group, will focus on the couple's philanthropy, it gives Zuckerberg access to a top pollster as rumors emerge of a potential presidential run.

Zuckerberg has been touring the country as part of "A Year of Travel," which included a stop in Iowa this June - a must-go destination for anyone floating a presidential bid.

The "Year of Travel" has been compared to a presidential listening tour and fueled speculation that he could run for president.

He has denied that he is running for president multiple times, but rumors of a run have persisted as the Facebook founder continues his tour and weighs in on political issues like healthcare.

"Some of you have asked if this challenge means I'm running for public office. I'm not," he wrote in a Facebook post earlier this year.

"I'm doing it to get a broader perspective to make sure we're best serving our community of almost 2 billion people at Facebook and doing the best work to promote equal opportunity at the Chan Zuckerberg Initiative."