Facebook CEO Zuckerberg: 'I would guess that our employee base skews left-leaning' 

Under questioning from Wisconsin Republican Sen. Ron Johnson, Facebook CEO Mark Zuckerberg told the Senate Commerce Committee on Wednesday that the employees at his company "skew left-leaning."

“Would you say that the political ideology of the employees at your company is, let's say, 50:50, conservative versus liberal progressive or do you think it’s closer to 90% liberal and 10% conservative?” Johnson asked during a hearing with the CEOs of Facebook, Twitter and Google on Section 230 of the Communications Decency Act.

“I don't know the makeup of our employees because it’s not something we ask or focus on," Twitter CEO Jack Dorsey responded. "It’s not something I look for.” 

In response to the same question, Google CEO Sundar Pichai said more than 50% of Google's 100,000 employees are from outside of California.

"It does tend to be proportionate to the areas that we are in," he said.

Facebook CEO Mark Zuckerberg said: "I don't know the exact number but I would guess that our employee base skews left-leaning.” 

According to OpenSecrets.org, the employees of Facebook, Google and Twitter favored Democrats over Republicans with political contributions in this election cycle.

Johnson also asked Dorsey and Zuckerberg if they had "any evidence" that the New York Post's recent reporting on content from a laptop belonging to Hunter Biden was based on Russian disinformation. 

"We don't," Dorsey said.

Later in the hearing, GOP Sen. Roger Wicker, the committee chairman, asked Zuckerberg if he has evidence that Russia was the source of the information in the New York Post's reporting.

"I would rely on the FBI to make that assessment," Zuckerberg said but added that he personally does not have that evidence. "I do not, myself."