Setti Warren, a former Newton mayor who is running for governor, has endorsed Boston City Councilor Ayanna Pressley in her bid to unseat US Representative Michael E. Capuano.
Pressley is challenging Capuano, a longtime incumbent, in the Democratic primary in Seventh Congressional District.
Warren, in a statement released Thursday, said Pressley is “the kind of advocate we need in Congress right now.”
“Her inspiring life story, her intellect and her commitment to standing up for people who need the most help even when the stakes are high are exactly the kind of qualities we need in Washington, D.C.,” he said.
Warren suggested that voters in the Seventh Congressional District will choose between “more than one excellent candidate,” in September.
“When a woman with her experience and skills stands up to offer her service, we need to say yes,” he said in the statement.
Pressley, a five-term councilor from Dorchester, announced her congressional run last month. Capuano, a former Somerville mayor, first won the congressional seat in 1998.
The congressional district includes Somerville, Chelsea, Everett, Randolph, half of Cambridge, one third of Milton, and the majority of Boston.
According to a new poll of likely voters, Capuano leads Pressley by 12 points.
Warren, a Democrat who served two terms as Newton mayor from 2010 to Jan. 1 of this year, announced his run for governor last May. Warren and fellow Democrats environmentalist and entrepreneur Robert K. Massie and former state budget official Jay Gonzalez are running to challenge incumbent Governor Charlie Baker, a Republican.Joshua Miller and Laura Krantz of Globe Staff contributed to this report. Danny McDonald can be reached at firstname.lastname@example.org. Follow him on Twitter @Danny__McDonald.