A top City Hall aide to Councillor At-Large Ayanna Pressley is switching over to the councillor’s reelection campaign. Jessica Taubner, who served as Pressley’s policy director, is on leave and will serve as Pressley’s campaign manager.

Taubner worked on Gov. Deval Patrick’s 2006 campaign as a field coordinator and helped organize Boston for the governor’s 2010 campaign. She also served as a co-field director when former City Councillors At-Large Michael Flaherty and Sam Yoon ran as a ticket in 2009.

"Jessica Taubner is an outstanding organizer and campaign veteran who brings tremendous experience and passion to my reelection campaign,” Pressley said in a statement. “We share similar values and principles and I trust Jessica to not just manage my reelection but to also strengthen my citywide organization for future campaigns. With Jessica leading my campaign, I'm confident, no matter the field, that I'll make history this November as the first black woman ever reelected to the Boston City Council."

Pressley, an Ashmont resident, was elected in 2009. She and the other three incumbent at-large councillors – John Connolly, Stephen Murphy and Felix Arroyo – are up for reelection this year.

Others are weighing runs of their own, including Flaherty, Hyde Park’s Will Dorcena, former mayoral and at-large candidate Kevin McCrea, South Boston resident Kenneth Jervis and past at-large candidate Sean Ryan, among others.

As policy director, Taubner managed Pressley’s various initiatives, such as the Boston Residents Job Policy ordinance and sex education. Taubner also spent some time on Beacon Hill as a senior researcher for the House side of the Joint Committee on Health Care Financing, working on a cost containment bill and an omnibus children’s mental health bill. Both bills were signed into law in 2008.

She also provided care to youths with behavioral health challenges and advocated for children and families enrolled in Worcester Head Start.

Taubner has a psychology degree from Clark University and a master’s in public health with a concentration in maternal and child health from Boston University.