Chelsea Manning intends to run for the US Senate in Maryland, returning the transgender former soldier to the spotlight after her conviction for leaking classified documents and her early release from military prison.
Manning, 30, filed her statement of candidacy with the Federal Election Commission on Thursday, listing an apartment in North Bethesda as her address.
She is running as a Democrat and will likely challenge two-term Sen. Ben Cardin in the primary. The state's senior senator is an overwhelming favourite to win.
Known as Bradley Manning at the time of her 2010 arrest, the former Army intelligence analyst was convicted of leaking more than 700,000 military and State Department documents to the anti-secrecy website WikiLeaks. She's been hailed as a traitor as well as a courageous hero.
Manning was sentenced to 35 years in prison. President Barack Obama granted Manning clemency before leaving office last year.
The media organisation Red Maryland first reported Manning's intention to run. The Associated Press was unsuccessful in reaching Manning for comment.
A spokeswoman for Cardin, Sue Walitsky, did not immediately return a phone call. Nor did Fabion Seaton, a spokesman for the Maryland Democratic Party.
Manning would not be the first transgender candidate to challenge a sitting member of Congress.