By Bian Elkhatib

Chelsea Manning — a former soldier and transgender activist who served seven years in prison for releasing confidential documents — recently made headlines by announcing she’s challenging Sen. Ben Cardin in the Maryland Democratic primary. Watch highlights of Manning’s campaign intro video, as well as five other candidates who have recently announced they’re running in the midterms. Last year, Roll Call rounded up two other sets of intro videos from candidates making a stir. Watch the firstand second compilations here.