UNITE HERE Local 26, the 12,000-person union representing hospitality workers in Massachusetts and Rhode Island, is swinging its support to state Rep. Liz Miranda as she runs for the Second Suffolk Senate seat.

“Liz grew up in a Local 26 household. She knows better than anyone what hotel and food workers need and how to get it,” the union’s president, Carlos Aramayo said in a statement. “She has been at our side at the negotiation table, and we know she can deliver for our members in the Massachusetts Senate.”

Miranda said her mother Maria worked in the hospitality sector and the union “paved the way for my family and I to have access to fair wages and a quality of life that changed the trajectory of our lives.”

The Second Suffolk district includes Dorchester, Mattapan, Hyde Park, Jamaica Plain, Roslindale, the South End, Fenway and Mission Hill.

The other major candidates in the race are state Rep. Nika Elugardo, former federal housing official Miniard Culpepper and former state Sen. Dianne Wilkerson. The state Democratic primary, which will likely determine who takes the oath of office in January due to a lack of a Republican contender in November, is set for Tuesday, Sept. 6.

Miranda has also touted endorsements from the Massachusetts Nurses Association, SEIU 509, City Councillor At-Large Ruthzee Louijeune, Roxbury Councillor Tania Fernandes Anderson, and the Environmental League of Massachusetts Action Fund.

Local 26, which is based in Medford, has made several endorsements in a number of local races this year, including the Suffolk DA’s race (Ricardo Arroyo over Kevin Hayden) and the East Boston-based Senate seat (Lydia Edwards over Anthony D’Ambrosio).

Its members work at various hotels and colleges in the Boston area, as well as the Boston Convention and Exhibition Center, and Logan International Airport, according to its website.

During last year’s mayoral race, the union endorsed Acting Mayor Kim Janey in the preliminary. A super PAC with ties to Local 26 swung into action on her behalf. Its super PAC has been quiet this year, aside from funneling $15,000 to a separate super PAC funded by unions and a top lobbyist backing state Sen. Diana DiZoglio for state auditor.

Another union super PAC, this one with ties to the Quincy-based Massachusetts Teachers Association, is backing Elugardo in the Second Suffolk Senate race. According to filings with state regulators, the super PAC has spent nearly $17,500 in support of Elugardo.