Prince George's County Executive Rushern L. Baker III, left, chats with Maryland Attorney General Brian E. Frosh in Annapolis, Md., on Feb. 4, 2015. (Linda Davidson/The Washington Post)

Maryland Attorney General Brian E. Frosh on Wednesday became the second high-profile Democrat from Montgomery County to endorse Prince George's County Executive Rushern L. Baker III in his bid for Maryland governor.

"Just look at what he did in Prince George's County, and I think it tells you what he can do for the state," Frosh said in a video released by the campaign. "When he took office, the county was struggling. Crime was up, foreclosures were at a record high, and the county was engulfed in a scandal. The county is now thriving. Unemployment is down, crime is way down. Rushern has the ability, the intelligence, and the experience to make Maryland a better state."

Frosh's endorsement follows that of U.S. Sen. Chris Van Hollen (D-Md.), who announced his support of Baker (D) last month. The endorsements are expected to boost Baker's name recognition across the state before the crowded June 26 primary and to help Baker solidify his profile in voter-rich Montgomery County.

They also could be a blow to state Sen. Richard S. Madaleno Jr. (D), the only gubernatorial candidate from Montgomery County.

Both Frosh and Van Hollen served in the Maryland General Assembly with Baker, and they have known him for more than 25 years.

In recent weeks, Baker has also been endorsed by Prince George's Council member Derrick Leon Davis (D) and state House Majority Whip Talmadge Branch (D-Baltimore City).

Gubernatorial hopeful Ben Jealous also has received a number of high-profile endorsements, including from U.S. Sen. Bernie Sanders (I-Vt.), who is scheduled to appear with him at a rally Wednesday in Baltimore.

Other Democratic candidates seeking to challenge popular incumbent Gov. Larry Hogan (R) are Baltimore County Executive Kevin Kamenetz, policy consultant Maya Rockeymoore Cummings, tech entrepreneur Alec Ross, lawyer James L. Shea and Krishanti Vignarajah, a former policy aide for Michelle Obama.