Maryland gubernatorial candidate Ben Jealous speaks at a rally where he was endorsed by Sen. Bernie Sanders (I-Vt.) in Silver Spring, Md., on July 13, 2017. (Michael Robinson Chavez/The Washington Post)

Ben Jealous picked up an endorsement Friday from Maryland Working Families, a statewide progressive group, in his 2018 bid for Maryland governor.

The support from the grass-roots group is the third endorsement the former president of the NAACP has received from a progressive organization since he launched his campaign at the end of May.

“Ben’s bold progressive vision for our state is exactly what we need to ensure new opportunities reach working families in every corner of our state,” Charly Carter said in a statement. “Ben is unafraid of challenging the status quo and standing up for what is right.”

Last month, Jealous received endorsements from U.S. Sen. Bernie Sanders (I-Vt) and Our Revolution, a national progressive group that formed after the senator’s upstart presidential bid, and the Maryland arm of the group. The endorsements from Sanders and Our Revolution were expected, given Jealous’s role as co-chairman of Sanders’s campaign in Maryland and his former board seat with Our Revolution.

In May, before Jealous announced his candidacy, Democracy for America, another national progressive group, said it was ready to mobilize to help him run.

Jealous’s agenda is similar to Sanders’s and includes a single-payer health-care system, a $15 minimum wage and debt-free community and public colleges.

The endorsement comes as the field of Democratic candidates lining up to challenge Gov. Larry Hogan (R) continues to grow. This week, Krishanti Vignarajah, a one-time policy director for former first lady Michelle Obama, entered the race for the Democratic nomination.

Also running are: Prince George’s County Executive Rushern L. Baker III; state Sen. Richard S. Madaleno Jr. (Montgomery); Alec Ross, a technology entrepreneur; and lawyer James L. Shea. Baltimore County Executive Kevin B. Kamenetz; former Maryland attorney general Douglas F. Gansler; and Maya Rockymoore Cummings, a policy consultant who is married to U.S. Rep. Elijah E. Cummings (D-Md.), have said they are considering entering the race.