Democrats alerted the FBI on Thursday to decades-old sexual-misconduct allegations against President Trump’s Supreme Court nominee Brett Kavanaugh, according to reports and a person familiar with the matter.

The potentially damning claims, which come as the Senate prepares to vote on Kavanaugh’s nomination to the highest court in the land, were made in a letter obtained by Senate Judiciary Committee ranking member Dianne Feinstein, a Democratic source told the Daily News.