The former aide,
Tara Reade, who briefly worked as a staff assistant in
Mr. Biden’s Senate office, told The New York Times that in 1993, Mr. Biden pinned her to a wall in a Senate building, reached under her clothing and penetrated her with his fingers. A friend said that Ms. Reade told her the details of the allegation at the time. Another friend and a brother of Ms. Reade’s said she told them over the years about a traumatic sexual incident involving Mr. Biden.
A spokeswoman for Mr. Biden said the allegation was false. In interviews, several people who worked in the Senate office with Ms. Reade said they did not recall any talk of such an incident or similar behavior by Mr. Biden toward her or any women. Two office interns who worked directly with Ms. Reade said they were unaware of the allegation or any treatment that troubled her.