US Senate candidate Alvin Greene has been indicted on two pornography-related charges.
The South Carolina Democrat is accused of distributing, procuring or promoting obscenity and communicating obscene material to a person without consent.
Mr Greene, an unemployed veteran, was a surprise winner of the June Democratic primary, beating a party favourite.
He was arrested last November after a female student accused him of showing her obscene online photos.
Mr Greene declined to comment on the incident, which allegedly occurred in a University of South Carolina computer lab.
Although he was on the ballot, Mr Greene had not actively campaigned for the Democratic Senate nomination.
Since his win he has made few public comments and has raised less than $1,000 (£640) in campaign funds.
He will face Senator Jim DeMint, a popular incumbent, in November's mid-term elections.