Will Jawando, left, and David Trone shake hands before a forum with candidates for Maryland's 8th Congressional District on March 12 in Takoma Park. (Bill O'Leary/The Washington Post)

With less than a month left until the April 26 primary, Democratic congressional candidates in Maryland’s District 8 continue to collect endorsements.

Will Jawando has won the support of Rep. John Lewis (D-Ga.), the civil rights icon. Lewis said in a statement that Jawando, a former congressional and White House aide,“will be an advocate and ally on the issues that matter most to our community; reducing gun violence, protecting our right to vote, and securing equal pay for equal work.”

Jawando, the only African American in the nine-candidate Democratic field, has also been endorsed by former Environmental Protection Agency administrator Lisa Jackson, former U.S. education secretary Arne Duncan, former NAACP president Ben Jealous, Montgomery County Council member Craig Rice (D-Germantown ) and Montgomery County Board of Education member Christopher S. Barclay.

Businessman David Trone was endorsed this week by former U.S. education secretary and South Carolina governor Richard Riley, who said the wine retailer and philanthropist would be a champion for public education.

“We need David Trone in Congress,” Riley said in a statement.

Trone’s company, Total Wine & More, covers the costs of GEDs for employees and has a program to cover the full cost of college through a partnership in two states, including Maryland. As a congressional candidate, he favors universal prekindergarten and programs to make college more affordable.

Trone and Riley are alumni of Furman University in Greenville, S.C. Riley is a former chairman of the school’s board of trustees, and Trone is a current member. In 2012, Trone contributed $500,000 to the endowment of the Richard W. Riley Institute of Government, Politics and Public Leadership at Furman.

Kathleen Matthews, whose list of endorsements from elected officials includes a number of congressional Democrats, got a boost last week from state Del. Bill Frick (D-Montgomery), whose legislative district includes about 75,000 8th Congressional District voters.

“As a member of Congress, Kathleen Matthews will be a tremendous spokesperson for Democratic values and a pragmatic advocate for working families and the middle class,” Frick said.