Rep. Donna Edwards, D-Md., made her Senate bid official Tuesday, announcing her intention to run in a Web video.

“I’m announcing my candidacy for the United States Senate,” she says in the autobiographical video. The five-term congresswoman narrates the 2-minute video, which shows Maryland’s National Harbor in the background.

Edwards is the second House Democrat to announce her intention to run for the seat held by retiring Democratic Sen. Barbara A. Mikulski. Edwards’ colleague, Rep. Chris Van Hollen, announced last week, and quickly earned the endorsement of Senate Majority Leader Harry Reid.