In her debut campaign video, former Montgomery County council member and former executive director of the Center for Working Families Valerie Ervin announces her bid to represent Maryland’s 8th congressional district. (Valerie Ervin)

Valerie Ervin, a former member of the Montgomery County Council and school board, announced her candidacy Wednesday for Maryland’s 8th Congressional District seat. She is the sixth person to enter April’s Democratic primary to replace Rep. Chris Van Hollen (D) in the U.S. House of Representatives.

Ervin rolled out the news on social media with a polished one-minute video. She said in a statement that she is entering the race to advance the agenda she has worked on locally and nationally, including an increased minimum wage.

“While we have made great strides here in Montgomery County and across our district, there is still so much work we need to do,” Ervin said. “Now it’s time to take our fight for working families to the halls of Congress — to get real things done to advance fair wages, strong communities and equal opportunity for all.”

Ervin, 58, a former organizer for the United Food and Commercial Workers union, served two years on Montgomery’s Board of Education before becoming the first African American woman elected to the County Council, in 2006. She represented District 5, which includes Kensington, Silver Spring, Takoma Park and Wheaton.

She resigned in 2013 to become executive director of the Center for Working Families, a nonprofit that promotes economic and social justice issues. Ervin said she has left that job. She is a mother of two and lives in Silver Spring.

Van Hollen is running for the U.S. Senate seat being vacated by Sen. Barbara A. Mikulski (D-Md.).

Other Demoratic candidates are Dels. Kumar P. Barve (D-Montgomery) and Ana Sol Gutierrez (D-Montgomery), state Sen. Jamie B. Raskin (D-Montgomery), former Obama White House aide Will Jawando and former news anchor and Marriott executive Kathleen Matthews.