New York City Mayor Bill de Blasio on Sunday endorsed Democratic state Senate candidate Jessica Ramos in her Democratic primary bid against Queens Sen. Jose Peralta.

Ramos is a former aide to de Blasio’s administration, having worked as the director of Latino media.

“Jessica Ramos is a tireless advocate for her community and a progressive champion for working families—and I’m proud to endorse her for State Senate. Jessica will help give New York a true Democratic majority in the Senate and ensure vital progress in Albany—from real rent reform to public school funding to the DREAM Act,” de Blasio said.

“As a public school parent, a Queens native and a daily subway rider, Jessica knows firsthand the challenges her neighbors face and will stand up for working people in Albany. In City Hall, Jessica worked with me to expand access to resources for Latino communities, and I know in Albany she’ll be a strong parter that advocates for our city’s diverse communities.”

Ramos is the second Democratic challenger to a former member of the Independent Democratic Conference de Blasio has endorsed. Last week, the mayor gave his nod to Zellnor Myrie, who is challenging Brooklyn Democratic Sen. Jesse Hamitlon.

“Mayor de Blasio has fought to make this city fairer for working families, and I’m honored to receive his endorsement. Under the Mayor’s leadership, New York City has become a national leader in early childhood education and invested deeply in public school students across all five boroughs,” Ramos said.

“During my time in City Hall, I saw firsthand how many progressive policies were blocked by Republican leadership in Albany. I’m proud to have the Mayor’s support as we campaign to build a true Democratic majority in the State Senate, and I look forward to partnering with his administration to deliver for working families in Queens and across the state.”