Adams said the campaign will issue a news release Tuesday about Forbes’ endorsement.
Forbes was a Republican candidate in the presidential primaries in 1996 and 2000. He primarily ran on a campaign to establish a flat income tax. Forbes also is editor-in-chief of business magazine Forbes.
Paul, a Bowling Green eye surgeon and the son of U.S. Rep. Ron Paul of Texas, is making his first bid for public office.
Other Republican candidates in Kentucky’s U.S. Senate race are Secretary of State Trey Grayson, Todd County businessman Bill Johnson, Brian Oerther of Oldham County and Roger Thoney of Northern Kentucky.