LINCOLN, Neb. (AP) — Billionaire investor Warren Buffett has contributed $100,000 to the Democratic candidate for governor in Nebraska.

The contribution to Chuck Hassebrook was disclosed Tuesday through the candidate’s filing with the Nebraska Accountability and Disclosure Commission. Hassebrook, a former University of Nebraska Regent and director of the Center for Rural Affairs, is running against Republican Pete Ricketts, a wealthy Omaha businessman, whose family owns the Chicago Cubs baseball team.

Buffett, the chairman of Omaha-based Berkshire Hathaway, contributes most often to Democratic candidates. A spokeswoman for Buffett says he made the contribution because he believes Hassebrook would make “an outstanding governor.”

The donation may be one of the largest that Buffett, 83, has made to a single candidate at one time, according to Federal Election Commission records.