The billionaire told CNBC on Friday he recently pledged $20 million to Democratic groups because he felt the need to act after hearing some of the rhetoric coming from Republicans — particularly during the Republican National Convention.
"I think it's apparent to every American that this is a special election. The stakes are extremely high," he said in an interview with "Power Lunch."
"We just felt really compelled to, sort of, get off the sidelines and help ensure that the Democrats were able to win the election."
"The polarization in America today has yielded a race that is about much more than policies and ideas," he wrote. "It has become a referendum on who we want to be — as individuals, as a nation and as a society."
The money will be split among several organizations, including the League of Conservation Voters and For Our Future political action committee.