Three Dorchester residents are mounting campaigns to fill the House seat vacated by Senator-elect Linda Dorcena Forry’s elevation to the Senate. Dan Cullinane, Marydith Tuitt and Stephanie Everett, who have all worked as aides to local elected officials, have announced their campaigns for the 12th Suffolk House district.

Tuitt, current chief of staff to Rep. Gloria Fox, has lived in the district for over 26 years and lists youth development, senior issues and veterans’ issues as her priorities. Everett worked as public safety manager for the Metropolitan Area Planning Council where she oversaw efforts to decrease youth violence and worked for Sen. Sonia Chang-Diaz as deputy chief of staff. Cullinane worked on Forry’s Senate campaign and has held positions on the staffs of Rep. Martin Walsh and City Councilor Maureen Feeney.

Everett and Tuitt have previously run against each other, facing off as part of the large field that ran for the Dorchester City Council seat in 2011.

The district, which Forry represented since 2005 when she won a special election to replace former House Speaker Thomas Finneran, includes Mattapan, the southwestern portion of Dorchester and parts of Milton and Hyde Park.